First Summary (The Ten Main Classes) | |||||||||||||||||||||
000 : Computers, information, & general works | |||||||||||||||||||||
100 : Philosophy & psychology | |||||||||||||||||||||
200 : Religion | |||||||||||||||||||||
300 : Social sciences | |||||||||||||||||||||
400 : Language | |||||||||||||||||||||
500 : Science | |||||||||||||||||||||
600 : Technology | |||||||||||||||||||||
700 : Arts & recreation | |||||||||||||||||||||
800 : Literature | |||||||||||||||||||||
900 : History & geography | |||||||||||||||||||||
Second Summary (The Hundred Divisions)
600 : Technology
| 610 : Medicine & health
| 620 : Engineering
| 630 : Agriculture
| 640 : Home & family management
| 650 : Management & public relations
| 660 : Chemical engineering
| 670 : Manufacturing
| 680 : Manufacture for specific uses
| 690 : Building & construction
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| 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] |