Classification
700 - The arts; fine & decorative arts
227
620 - Engineering & allied operations
196
600 - Technology
193
000 - Computer science, information & general works
164
540 - Chemistry & allied sciences
136
333 - Economics of land & energy
125
547 - Organic chemistry
113
610 - Medicine & health
109
900 - History & geography
75
363 - Other social problems & services
64
580 - Plants (Botany)
58
660 - Chemical engineering
50
576 - Genetics & evolution
48
668 - Technology of other organic products
47
380 - Commerce, communications & transportation
45
615 - Pharmacology & therapeutics
43
140 - Specific philosophical schools
39
541 - Physical chemistry
38
500 - Natural sciences & mathematics
32
330 - Economics
30
546 - Inorganic chemistry
27
530 - Physics
24
572 - Biochemistry
23
414 - Phonology & phonetics
21
661 - Industrial chemicals
18
621 - Applied physics
16
632 - Plant injuries, diseases & pests
16
664 - Food technology
16
304 - Factors affecting social behavior
15
574 - [Unassigned]
15
616 - Diseases
15
800 - Literature & rhetoric
13
628 - Sanitary & municipal engineering
12
581 - Specific topics in natural history
11
630 - Agriculture & related technologies
11
570 - Life sciences; biology
10
612 - Human physiology
10
400 - Language
9
720 - Architecture
9
340 - Law
8
662 - Explosives, fuels & related products
8
667 - Cleaning, color & coating technologies
7
100 - Philosophy & psychology
6
370 - Education
6
665 - Industrial oils, fats, waxes & gases
5
543 - Analytical chemistry
4
780 - Music
4
170 - Ethics
3
338 - Production
3
410 - Linguistics
3
more ...