600
600 Technology
601 Philosophy & theory
602 Miscellany
603 Dictionaries & encyclopedias
604 Special topics
605 Serial publications
606 Organizations
607 Education, research & related topics
608 Inventions & patents
609 Historical, geographic & persons treatment
610 Medicine & health
611 Human anatomy, cytology & histology
612 Human physiology
613 Personal health & safety
614 Incidence & prevention of disease
615 Pharmacology & therapeutics
616 Diseases
617 Surgery & related medical specialties
618 Gynecology, obstetrics, pediatrics & geriatrics
619 [Unassigned]
620 Engineering & allied operations
621 Applied physics
622 Mining & related operations
623 Military & nautical engineering
624 Civil engineering
625 Engineering of railroads & roads
626 [Unassigned]
627 Hydraulic engineering
628 Sanitary & municipal engineering
629 Other branches of engineering
630 Agriculture & related technologies
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 & family management
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 persons
650 Management & auxiliary services
651 Office services
652 Processes of written communication
653 Shorthand
654 [Unassigned]
655 [Unassigned]
656 [Unassigned]
657 Accounting
658 General management
659 Advertising & public relations
660 Chemical engineering
661 Industrial chemicals
662 Explosives, fuels & related products
663 Beverage technology
664 Food technology
665 Industrial oils, fats, waxes & gases
666 Ceramic & allied technologies
667 Cleaning, color & coating technologies
668 Technology of other organic products
669 Metallurgy
670 Manufacturing
671 Metalworking & primary 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 goods & related products
686 Printing & related activities
687 Clothing & accessories
688 Other final products & packaging
689 [Unassigned]
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
699 [Unassigned]
they don't
400-499
The Dewey Decimal Classification (DDC), or Dewey Decimal System, is a proprietary library classification system first published in the United States by Melvil Dewey in 1876.
Dewey Decimal is the classification system of the library.
know the ten main devesions of the Dewey decimal system
Melville Dewey
The Dewey decimal number for Greek civilization is 938 in the Dewey Decimal Classification system.
melvil dewey
Dewey decimal system
The Dewey Decimal System and the Library of Congress Classification System.
The library uses the Dewey Decimal Classification system to allocate numbers to books.
dewey decimal system