Class Summary
- 50 - NATURAL SCIENCE (6)
- 501 - NATURAL SCIENCE PHILOSOPHY (1)
- 502 - NATURAL SCIENCE
- 503 - NATURAL SCIENCE DICTIONARIES
- 504 - NATURAL SCIENCE ESSAYS
- 505 - NATURAL SCIENCE PERIODICALS
- 506 - NATURAL SCIENCE SOCIETIES
- 507 - NATURAL SCIENCE EDUCATION. MUSEUMS (2)
- 508 - NATURAL SCIENCE POLYGRAPHY (16)
- 509 - NATURAL SCIENCE HISTORY (2)
- 51 - MATHEMATICS (7)
- 511 - ARITHMETIC(85)
- 512 - ALGEBRA(185)
- 513 - GEOMETRY. CONIC SECTIONS(45)
- 514 - TRIGONOMETRY(45)
- 515 - DESCRIPTIVE GEOMETRY(197)
- 516 - ANALYTIC GEOMETRY. QUATERNION(142)
- 517 - MATHEMATICAL CALCULUS
- 518 - ALGORITHMS
- 519 - MATHEMATICAL PROBABILITIES(95)
- 52 - ASTRONOMY (3)
- 521 - THEORETIC ASTRONOMY (15)
- 522 - PRACTICAL
- 523 - DESCRIPTIVE ASTRONOMY (119)
- 524 - ASTRONOMY MAPS
- 525 - EARTH(15)
- 526 - GEODESY(53)
- 527 - NAVIGATION ASTRONOMY (11)
- 528 - ASTRONOMY EPHEMEREDES(4)
- 529 - ASTRONOMY CHRONOLOGY(32)
- 53 - PHYSICS (181)
- 531 - MECHANICS(116)
- 532 - LIQUIDS. HYDRAULICS(80)
- 533 - GASES. PNEUMATICS (56)
- 534 - SOUND. ACOUSTICS(23)
- 535 - LIGHT. OPTICS(61)
- 536 - HEAT (76)
- 537 - ELECTRICITY(71)
- 538 - MAGNETISM(65)
- 539 - MOLECULAR PHYSICS(165)
- 54 - CHEMISTRY (6)
- 541 - THEORETIC CHEMISTRY (159)
- 542 - PRACTICAL
- 543 - CHEMICAL ANALYSIS(76)
- 544 - QUALITATIVE CHEMISTRY (8)
- 545 - QUANTITATIVE CHEMISTRY (9)
- 546 - INORGANIC CHEMISTRY (181)
- 547 - ORGANIC CHEMISTRY (254)
- 548 - CRYSTALLOGRAPHY(30)
- 549 - MINERALOGY(205)
- 55 - GEOLOGY (2)
- 551 - PHYSICAL
- 552 - LITHOLOGY. PETROGRAPHY(48)
- 553 - ECONOMIC GEOLOGY (323)
- 554 - EUROPE GEOLOGY
- 555 - ASIA GEOLOGY
- 556 - AFRICA. GEOLOGY
- 557 - NORTH AMERICA GEOLOGY
- 558 - SOUTH AMERICA GEOLOGY
- 559 - OCEANIA. POLAR REGIONS GEOLOGY
- 56 - PALEONTOLOGY (43)
- 561 - PLANTS PALEONTOLOGY (95)
- 562 - INVERTEBRATES PALEONTOLOGY (4)
- 563 - PROTOZOA. RADIATES PALEONTOLOGY (56)
- 564 - MOLLUSKS PALEONTOLOGY (38)
- 565 - ARTICULATES PALEONTOLOGY (135)
- 566 - VERTEBRATES PALEONTOLOGY (7)
- 567 - FISHES. BATRACHIANS PALEONTOLOGY (92)
- 568 - REPTILES. BIRDS PALEONTOLOGY (40)
- 569 - MAMMALS PALEONTOLOGY (70)
- 57 - BIOLOGY(2)
- 61 - MEDICINE (79)
- 571 - PREHISTORIC ARCHEOLOGY
- 572 - ETHNOLOGY. ANTHROPOLOGY(10)
- 573 - NATURAL HISTORY OF MAN(34)
- 574 - HOMOLOGIES(512)
- 575 - EVOLUTION. SPECIES(52)
- 576 - ORIGIN
- 577 - PROPERTIES OF LIVING MATTER(7)
- 578 - MICROSCOPY(9)
- 579 - COLLECTORS MANUALS IN BIOLOGY (9)
- 58 - BOTANY (1)
- 581 - PHYSIOLOGIC
- 582 - PHANEROGAMIA(53)
- 583 - DICOTYLEDONOUS(1024)
- 584 - MONOCOTYLEDONOUS(282)
- 585 - GYMNOSPERMAE(41)
- 586 - CRYPTOGAMIA(2)
- 587 - PTERIDOPHYTA(41)
- 588 - BRYOPHYTE(17)
- 589 - THALLOPHYTA (307)
- 59 - ZOOLOGY (3)
- 591 - PHYSIOLOGIC ZOOLOGY (294)
- 592 - INVERTEBRATES ZOOLOGY (6)
- 593 - PROTOZOA. RADIATES ZOOLOGY (123)
- 594 - MOLLUSKS ZOOLOGY (74)
- 595 - ARTICULATES ZOOLOGY (450)
- 596 - VERTEBRATES ZOOLOGY (49)
- 597 - FISHES. BATRACHIANS ZOOLOGY (291)
- 60 - TECHNOLOGY (3)
- 601 - TECHNOLOGY PHILOSOPHY
- 602 - TECHNOLOGY COMPENDIUMS (1)
- 603 - TECHNOLOGY DICTIONARIES
- 604 - TECHNOLOGY ESSAYS (28)
- 605 - TECHNOLOGY PERIODICALS
- 606 - TECHNOLOGY SOCIETIES. FAIRS. EXHIBITIONS
- 607 - TECHNOLOGY EDUCATION. SCHOOLS OF TECHNOLOGY (4)
- 608 - PATENTS.. INVENTIONS (2)
- 609 - HISTORY OF TECHNOLOGIES (4)
- 611 - ANATOMY (284)
- 612 - PHYSIOLOGY (456)
- 613 - HYGIENE GYMNASTICS TRAINING (211)
- 614 - PUBLIC HEALTH (245)
- 615 - MATERIA MEDICA. THERAPEUTICS (364)
- 616 - PATHOLOGY DISEASES TREATMENT (985)
- 617 - SURGERY. DENTISTRY (408)
- 618 - DISEASES OF WOMEN
- 619 - COMPARATIVE MEDICINE. VETERINARY (14)
- 62 - ENGINEERING (281)
- 621 - MECHANICAL ENGINEERING (973)
- 622 - MINING (230)
- 623 - MILITARY
- 624 - BRIDGE
- 625 - ROAD
- 626 - CANAL ENGINEERING
- 627 - RIVER
- 628 - SANITARY. WATERWORKS ENGINEERING (209)
- 629 - OTHER BRANCHES ENGINEERING (672)
- 63 - AGRICULTURE (14)
- 631 - SOIL. FERTILIZERS. DRAINAGE (173)
- 633 - GRAINS. GRASSES. FIBERS. TEA ETC (183)
- 634 - FRUITS. ORCHARDS. VINEYARDS (166)
- 635 - KITCHEN. GARDEN (207)
- 636 - DOMESTIC ANIMALS (411)
- 637 - DAIRY. MILK. BUTTER. CHEESE (49)
- 638 - BEES. SILKWORMS (17)
- 639 - FISHING. TRAPPING (153)
- 64 - DOMESTIC ECONOMY (24)
- 641 - COOKERY. GASTRONOMY (838)
- 642 - CONFECTIONERY. ICES (61)
- 643 - FOOD. DINING. CARVING.HOUSING (68)
- 644 - FUEL LIGHTS (10)
- 645 - FURNITURE. CARPETS. UPHOLSTERY (61)
- 646 - CLOTHING. TOILET. COSMETICS (187)
- 647 - SERVANTS- TRAINING DUTIES WAGES (32)
- 648 - LAUNDRY (29)
- 649 - NURSERY. CHILDREN. SICKROOM (72)
- 65 - COMMUNICATION. COMMERCE (9)
- 651 - OFFICE EQUIPMENT
- 652 - WRITING. MATERIALS. TYPEWRITERS (18)
- 653 - ABBREVIATIONS. SHORTHAND (24)
- 654 - TELEGRAPH. CABLES. SIGNALS
- 655 - PRINTING. PUBLISHING. COPYRIGHT
- 656 - TRANSPORTATION. RAILROADING ETC.
- 657 - BOOKKEEPING. ACCOUNTS (100)
- 658 - BUSINESS MANUALS. METHODS. TABLES (635)
- 659 - ADVERTISING
- 66 - CHEMICAL TECHNOLOGY (172)
- 661 - CHEMICALS INDUSTRIES (235)
- 662 - PYROTECHNICS. EXPLOSIVES (94)
- 663 - BEVERAGES- WINES LIQUORS ALES ETC. (69)
- 664 - FOODS- SUGAR STARCH (291)
- 665 - LIGHTS- GAS OIL CANDLES. (152)
- 666 - CERAMICS- GLASS CLAY CEMENT (118)
- 667 - BLEACHING. DYEING. INKS. PAINTS (61)
- 668 - OTHER ORGANIC CHEMICAL INDUSTRIES (125)
- 669 - METALLURGY. ASSAYING (235)
- 67 - MANUFACTURERS (20)
- 671 - ARTICLES MADE OF METALS (81)
- 672 - ARTICLES OF IRON
- 673 - ARTICLES OF BRASS
- 674 - LUMBER
- 675 - LEATHER- ARTICLES MADE OF LEATHER (21)
- 676 - PAPER- ARTICLES MADE OF PAPER (97)
- 677 - COTTON WOOD SILK LINEN (177)
- 678 - RUBBER
- 679 - CELLULOID
- 68 - MECHANIC TRADES (2)
- 681 - MATCH
- 682 - BLACKSMITHING. HORSESHOEING (9)
- 683 - LOCK
- 684 - CARRIAGE
- 685 - SADDLERY
- 686 - BOOKBINDING (101)
- 687 - CLOTHESMAKING. HATS (65)
- 689 - OTHER TRADES
- 69 - BUILDING (94)
- 691 - MATERIALS. PROCESSES. PRESERVATIVES (44)
- 692 - PLANS
- 693 - MASONRY. PLASTERING ETC. (66)
- 694 - CARPENTRY. STAIRBUILDING (8)
- 695 - ROOFING. SLATING
- 696 - PLUMBING. GAS
- 697 - HEATING
- 698 - PAINTING
&&&
| DDC | Course Title | Actions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 519(0054) | Prediction | 44 | ||||||||
| 519(0055) | Geometric probability | |||||||||
| 519(0056) | Probabilities | |||||||||
| 519(0057) | Combinatorial probabilities | 4 | ||||||||
| 519(0058) | Random processes | 16 | ||||||||
| 519(0059) | Diffusion processes | 127 | 18 | |||||||
| 519(0060) | Markov processes | 118 | 28 | |||||||
| 519(0061) | Branching processes | 113 | 2 | |||||||
| 519(0062) | Stationary processes | 140 | 9 | |||||||
| 519(0063) | Stochastic processes | 70 | 19 | |||||||
| 519(0064) | Gaussian processes | 101 | 26 | |||||||
| 519(0065) | Point processes | 104 | 36 | |||||||
| 519(0066) | Programming | 113 | 66 | |||||||
| 519(0067) | Convex programming | 124 | 2 | |||||||
| 519(0068) | Quadratic programming | 108 | 1 | |||||||
| 519(0069) | Single-stage programming | 113 | ||||||||
| 519(0070) | Dynamic programming | 59 | 50 | |||||||
| 519(0071) | Integer programming | 23 | ||||||||
| 519(0072) | Linear programming | 24 | ||||||||
| 519(0073) | Mathematical programming | 15 | ||||||||
| 519(0074) | Multistage programming | |||||||||
| 519(0075) | Nonlinear programming | 20 | ||||||||
| 519(0076) | Averaging | |||||||||
| 519(0077) | Hypothesis testing | 14 | ||||||||
| 519(0078) | Chi-square test | |||||||||
| 519(0079) | Markov risk | |||||||||
| 519(0080) | Time series | 189 | ||||||||
| 519(0081) | Mean | 4 | ||||||||
| 519(0082) | Decision theory | 25 | ||||||||
| 519(0083) | Estimation theory | 5 | ||||||||
| 519(0084) | Queuing theory | |||||||||
| 519(0085) | Control theory | 136 | ||||||||
| 519(0086) | Game theory | 74 | ||||||||
| 519(0087) | Sampling theory | 33 | ||||||||
| 519(0088) | Renewal theory | 8 | ||||||||
| 52 | ASTRONOMY (3) | |||||||||
| 520(0001) | Astrology | 1 | ||||||||
| 520(0002) | Astronomers | |||||||||
| 520(0003) | Planetariums | |||||||||
| 521 | THEORETIC ASTRONOMY (15) | |||||||||
| 521(0001) | Apogee | |||||||||
| 521(0002) | Rotation | 12 | ||||||||
| 521(0003) | Equilibrium | 17 | ||||||||
| 521(0004) | Kepler's laws | 3 | ||||||||
| 521(0005) | Celestial mechanics | 13 | ||||||||
| 521(0006) | Gravity | 51 | ||||||||
| 521(0007) | Precession | |||||||||
| 521(0008) | Many-bodies problem | |||||||||
| 521(0009) | Orbits | 3 | ||||||||
| 521(0010) | Nursing orders | |||||||||
| 521(0011) | Motion | 102 | ||||||||
| 521(0012) | Perigee | |||||||||
| 521(0013) | Perturbations | 5 | ||||||||
| 521(0014) | Problem of three bodies | 5 | ||||||||
| 521(0015) | Problem of n bodies | |||||||||
| 522 | PRACTICAL | 16 | ||||||||
| 522(0001) | Aberration | |||||||||
| 522(0002) | Astrophotography | |||||||||
| 522(0003) | Astrolabes | |||||||||
| 522(0004) | Radar astronomy | |||||||||
| 522(0005) | Gamma-ray astronomy | |||||||||
| 522(0006) | X-ray astronomy | |||||||||
| 522(0007) | Spherical astronomy | |||||||||
| 522(0008) | Infrared astronomy | 8 | ||||||||
| 522(0009) | Nutation astronomy | 1 | ||||||||
| 522(0010) | Practical astronomy | 2 | ||||||||
| 522(0011) | Celestial coordinates | |||||||||
| 522(0012) | Parallax corrections | |||||||||
| 522(0013) | Corrections | 5 | ||||||||
| 522(0014) | Chronographs | |||||||||
| 522(0015) | Quadrants | |||||||||
| 522(0016) | Celestial sphere | 1 | ||||||||
| 522(0017) | Spectroscopy | 50 | ||||||||
| 522(0018) | Photography | 5 | ||||||||
| 522(0019) | Photoelectric photometry | |||||||||
| 522(0020) | Photographic photometry | |||||||||
| 522(0021) | Astronomical instruments | 8 | ||||||||
| 522(0022) | Meridional instruments | 293 | ||||||||
| 522(0023) | Meridians | 338 | ||||||||
| 522(0024) | Micrometers | 195 | ||||||||
| 522(0025) | Astronomical observatories | 1430 | 1 | |||||||
| 522(0026) | Observatories | 335 | 23 | |||||||
| 522(0027) | Polarimetry | 459 | 1 | |||||||
| 522(0028) | Precession,celestial mechanics | |||||||||
| 522(0029) | Radio astronomy | 525 | 39 | |||||||
| 522(0030) | Radio telescopes | 71 | 14 | |||||||
| 522(0031) | Reformed refinery gas,astronomy | 135 | ||||||||
| 522(0032) | Sidereal clocks | 201 | ||||||||
| 522(0033) | Sextants | 159 | ||||||||
| 522(0034) | Telescopes | 9 | 5 | |||||||
| 522(0035) | Radar telescopes | |||||||||
| 522(0036) | Equatorial telescopes | 183 | ||||||||
| 522(0037) | Space telescopes | 7 | ||||||||
| 522(0038) | Zenith telescopes | 27 | ||||||||
| 522(0039) | Uranography | 1 | ||||||||
| 522(0040) | Compass variations | 457 | ||||||||
| 523 | DESCRIPTIVE ASTRONOMY (119) | |||||||||
| 523(0001) | Black holes | 635 | 200 | |||||||
| 523(0002) | Expanding universe theories | 2 | ||||||||
| 523(0003) | Planetary rings | |||||||||
| 523(0004) | Rings | 1 | ||||||||
| 523(0005) | Asteroids | 4 | ||||||||
| 523(0006) | Astrophysics | 86 | ||||||||
| 523(0007) | Eclipsing binaries | |||||||||
| 523(0008) | Spectroscopic binaries | 4 | ||||||||
| 523(0009) | Astrometric binaries - stars- | |||||||||
| 523(0010) | Visual binaries | |||||||||
| 523(0011) | Brightness | 4 | ||||||||
| 523(0012) | Heat | 173 | ||||||||
| 523(0013) | Cepheids | |||||||||
| 523(0014) | Halley's comet | |||||||||
| 523(0015) | Comets | 4 | ||||||||
| 523(0016) | Corona of sun | 7 | ||||||||
| 523(0017) | Coronagraphs | 3 | ||||||||
| 523(0018) | Cosmogony | |||||||||
| 523(0019) | Cosmology | 48 | ||||||||
| 523(0020) | Cosmochemistry | |||||||||
| 523(0021) | Counterglow | |||||||||
| 523(0022) | Continuous creation | 5 | ||||||||
| 523(0023) | Creation | 37 | ||||||||
| 523(0024) | Chromosphere of sun | 3 | ||||||||
| 523(0025) | Quasars | |||||||||
| 523(0026) | Celestial bodies | |||||||||
| 523(0027) | Globular clusters | 25 | ||||||||
| 523(0028) | Destruction of universe | |||||||||
| 523(0029) | Eclipses | |||||||||
| 523(0030) | Electricity | 61 | ||||||||
| 523(0031) | White dwarfs | 7 | ||||||||
| 523(0032) | Outer space | 2 | ||||||||
| 523(0033) | Stars | 44 | ||||||||
| 523(0034) | Binary stars | 31 | ||||||||
| 523(0035) | Neutron stars | 32 | ||||||||
| 523(0036) | Flare stars | 2 | ||||||||
| 523(0037) | Variable stars | 5 | ||||||||
| 523(0038) | Long-period variable stars | |||||||||
| 523(0039) | Semiregular variable stars | |||||||||
| 523(0040) | Evolution of stars | 46 | ||||||||
| 523(0041) | Stellar evolution | 45 | ||||||||
| 523(0042) | Faculae | |||||||||
| 523(0043) | Phases | 5 | ||||||||
| 523(0044) | Electromagnetic phenomena | 4 | ||||||||
| 523(0045) | End of universe | 19 | ||||||||
| 523(0046) | Star formation | 118 | ||||||||
| 523(0047) | Photosphere | |||||||||
| 523(0048) | Quasi-stellar sources | |||||||||
| 523(0049) | Galaxies | 49 | ||||||||
| 523(0050) | Heliographs | |||||||||
| 523(0051) | Heliostats | |||||||||
| 523(0052) | Jupiter | 2 | ||||||||
| 523(0053) | Solar flares | 10 | ||||||||
| 523(0054) | Meteor showers | |||||||||
| 523(0055) | Moon | 5 | ||||||||
| 523(0056) | Moons | |||||||||
| 523(0057) | Light | 110 | ||||||||
| 523(0058) | Magnetism | 4 | ||||||||
| 523(0059) | Magnitudes | |||||||||
| 523(0060) | Sunspots | |||||||||
| 523(0061) | Mars | 19 | ||||||||
| 523(0062) | Interstellar matter | |||||||||
| 523(0063) | Intergalactic matter | 2 | ||||||||
| 523(0064) | Interplanetary matter | |||||||||
| 523(0065) | Mercury | 7 | ||||||||
| 523(0066) | Sidereal month | |||||||||
| 523(0067) | Meteorites | 15 | ||||||||
| 523(0068) | Meteoroids | |||||||||
| 523(0069) | Meteors | |||||||||
| 523(0070) | Motion | 96 | ||||||||
| 523(0071) | Diffuse nebulas | |||||||||
| 523(0072) | Planetary nebulas | |||||||||
| 523(0073) | Neptune | |||||||||
| 523(0074) | Novas | |||||||||
| 523(0075) | Occultations | |||||||||
| 523(0076) | Orbits | 2 | ||||||||
| 523(0077) | Trans-uranian planets | |||||||||
| 523(0078) | Planets | 55 | ||||||||
| 523(0079) | Planetoids | |||||||||
| 523(0080) | Pluto | |||||||||
| 523(0081) | Cosmic dust | 13 | ||||||||
| 523(0082) | Solar prominences | 1155 | 16 | |||||||
| 523(0083) | Pulsating radio stars | 823 | 1 | |||||||
| 523(0084) | Pulsating variables | 619 | 2 | |||||||
| 523(0085) | Pulsars | 260 | 1 | |||||||
| 523(0086) | Radiant points | 627 | ||||||||
| 523(0087) | Clusters of stars | 1881 | 29 | |||||||
| 523(0088) | Solar radiation | 1442 | 49 | |||||||
| 523(0089) | Rotation | 272 | 5 | |||||||
| 523(0090) | Satellites | 176 | 19 | |||||||
| 523(0091) | Saturn - planet- | 169 | ||||||||
| 523(0092) | Solar system | 462 | 324 | |||||||
| 523(0093) | Soybeans | 406 | ||||||||
| 523(0094) | Sun | 301 | 24 | |||||||
| 523(0095) | Supernovas | 176 | ||||||||
| 523(0096) | Big bang theory | 245 | 9 | |||||||
| 523(0097) | Spectral types | 1252 | 3 | |||||||
| 523(0098) | Planetary transits | 8 | ||||||||
| 523(0099) | Transits | 273 | ||||||||
| 523(0100) | Universe | 197 | 22 | |||||||
| 523(0101) | Uranus | 255 | ||||||||
| 523(0102) | Cluster-type variables | 1509 | ||||||||
| 523(0103) | Eruptive variables | 1608 | 3 | |||||||
| 523(0104) | Extrinsic variables | 1504 | ||||||||
| 523(0105) | Intrinsic variables | 1376 | ||||||||
| 523(0106) | Multiple stars | 841 | 9 | |||||||
| 523(0107) | Venus | 307 | 8 | |||||||
| 523(0108) | Milky Way | 425 | 75 | |||||||
| 523(0109) | Solar wind | 720 | 153 | |||||||
| 523(0110) | 500 NATURAL SCIENCE | 1094 | 104 | |||||||
| 524 | ASTRONOMY MAPS | 10 | ||||||||
| 525 | EARTH(15) | 69 | ||||||||
| 525(0001) | Dawn | 268 | 1 | |||||||
| 525(0002) | Astronomical dawn | 293 | ||||||||
| 525(0003) | Twilight | 265 | 2 | |||||||
| 525(0004) | Astronomical twilight | 203 | ||||||||
| 525(0005) | Torres Strait | 415 | ||||||||
| 525(0006) | Astronomical geography | 409 | ||||||||
| 525(0007) | Orbits | 2 | ||||||||
| 525(0008) | Foucault's pendulum | |||||||||
| 525(0009) | Rotation | 5 | ||||||||
| 525(0010) | Sun tables | |||||||||
| 525(0011) | Temperance | |||||||||
| 525(0012) | Seasons | |||||||||
| 525(0013) | Earth | 65 | ||||||||
| 525(0014) | Zones of latitude | |||||||||
| 525(0015) | Frigid Zones | |||||||||
| 526 | GEODESY(53) | |||||||||
| 526(0001) | Surveyors | |||||||||
| 526(0002) | Contour surveying | |||||||||
| 526(0003) | Nets | 9 | ||||||||
| 526(0004) | Space surveying | 11 | ||||||||
| 526(0005) | Geodetic astronomy | |||||||||
| 526(0006) | Positional astronomy | |||||||||
| 526(0007) | Azimuth | |||||||||
| 526(0008) | Cartographers | |||||||||
| 526(0009) | Geodetic coordinates | 1 | ||||||||
| 526(0010) | Map making | 17 | ||||||||
| 526(0011) | Traversing | |||||||||
| 526(0012) | Gravity determinations | 1581 | 1 | |||||||
| 526(0013) | Map drawing | 940 | 1 | |||||||
| 526(0014) | Spirit leveling | 1193 | ||||||||
| 526(0015) | Photogrammetry | 233 | ||||||||
| 526(0016) | Ground photogrammetry | 218 | 1 | |||||||
| 526(0017) | Geodesy | 450 | ||||||||
| 526(0018) | Physical geodesy | 374 | ||||||||
| 526(0019) | Geodesists | 263 | ||||||||
| 526(0020) | Mathematical geography | 529 | 12 | |||||||
| 526(0021) | Latitude | |||||||||
| 526(0022) | Photographic surveying | |||||||||
| 526(0023) | Ground surveying | 2 | ||||||||
| 526(0024) | Geodetic surveying | |||||||||
| 526(0025) | Hydrographic surveying |