| 600 |
Technology (Applied sciences) |
| 601 |
Philosophy & theory |
| 602 |
Miscellany |
| 603 |
Dictionaries & encyclopedias |
| 604 |
Special topics |
| 605 |
Serial publications |
| 606 |
Organizations |
| 607 |
Education, research, related topics |
| 608 |
Invention & patents |
| 609 |
Historical, areas, persons treatment |
| 610 |
Medical sciences, Medicine |
| 611 |
Human anatomy, cytology, histology |
| 612 |
Human physiology |
| 613 |
Promotion of health |
| 614 |
Incidence & prevention of disease |
| 615 |
Pharmacology & theraputics |
| 616 |
Diseases |
| 617 |
Surgery & related medical specialities |
| 618 |
Gynecology & other medical specialities |
| 619 |
Experimental medicine |
| 620 |
Engineering & allied operations |
| 621 |
Applied physics |
| 622 |
Mining & related operations |
| 623 |
Military & nautical engineering |
| 624 |
Civil engineering |
| 625 |
Engineering of railroads, roads |
| 627 |
Hydraulic engineering |
| 628 |
Sanitary & municipal engineering |
| 629 |
Other branches of engineering |
| 630 |
Agriculture |
| 631 |
Techniques, equipment, materials |
| 632 |
Plant injuries, diseases, pests |
| 633 |
Field & plantation crops |
| 634 |
Orchards, fruits, forestry |
| 635 |
Garden crops (Horticulture) |
| 636 |
Animal husbandry |
| 637 |
Processing dairy & related products |
| 638 |
Insect culture |
| 639 |
Hunting, fishing, conservation |
| 640 |
Home economics & family living |
| 641 |
Food & drink |
| 642 |
Meals & table service |
| 643 |
Housing & household equipment |
| 644 |
Household utilities |
| 645 |
Household furnishings |
| 646 |
Sewing, clothing, personal living |
| 647 |
Management of public households |
| 648 |
Housekeeping |
| 649 |
Child rearing & home care of sick |
| 650 |
Management & auxiliary services |
| 651 |
Office services |
| 652 |
Processes of written communication |
| 653 |
Shorthand |
| 657 |
Accounting |
| 658 |
General management |
| 659 |
Advertising & public relations |
| 660 |
Chemical engineering |
| 661 |
Industrial chemicals technology |
| 662 |
Explosives, fuels technology |
| 663 |
Beverage technology |
| 664 |
Food technology |
| 665 |
Industrial oils, fats, waxes, gases |
| 666 |
Ceramic & allied technologies |
| 667 |
Cleaning, color, related technologies |
| 668 |
Technology of other organic products |
| 669 |
Metallurgy |
| 670 |
Manufacturing |
| 671 |
Metalworking & metal products |
| 672 |
Iron, steel, other iron alloys |
| 673 |
Nonferrous metals |
| 674 |
Lumber processing, wood products, cork |
| 675 |
Leather & fur processing |
| 676 |
Pulp & paper technology |
| 677 |
Textiles |
| 678 |
Elastomers & elastomer products |
| 679 |
Other products of specific materials |
| 680 |
Manufacture for specific uses |
| 681 |
Precision instruments & other devices |
| 682 |
Small forge work (Blacksmithing) |
| 683 |
Hardware & household appliances |
| 684 |
Furnishings & home workshops |
| 685 |
Leather, fur, related products |
| 686 |
Printing & related activities |
| 687 |
Clothing |
| 688 |
Other final products & packaging |
| 690 |
Buildings |
| 691 |
Building materials |
| 692 |
Auxiliary construction practices |
| 693 |
Specific materials & purposes |
| 694 |
Wood construction Carpentry |
| 695 |
Roof covering |
| 696 |
Utilities |
| 697 |
Heating, ventilating, air-conditioning |
| 698 |
Detail finishing |