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