Classification
610 - Medicine & health
620 - Engineering & allied operations
600 - Technology
315
700 - The arts; fine & decorative arts
218
900 - History & geography
192
333 - Economics of land & energy
140
000 - Computer science, information & general works
110
363 - Other social problems & services
105
580 - Plants (Botany)
99
630 - Agriculture & related technologies
72
140 - Specific philosophical schools
70
330 - Economics
63
380 - Commerce, communications & transportation
54
540 - Chemistry & allied sciences
36
576 - Genetics & evolution
34
500 - Natural sciences & mathematics
29
370 - Education
25
100 - Philosophy & psychology
23
551 - Geology, hydrology & meteorology
23
720 - Architecture
23
414 - Phonology & phonetics
21
320 - Political science
16
658 - General management
16
170 - Ethics
15
300 - Social sciences
14
340 - Law
13
581 - Specific topics in natural history
13
400 - Language
11
612 - Human physiology
11
800 - Literature & rhetoric
9
530 - Physics
8
615 - Pharmacology & therapeutics
8
304 - Factors affecting social behavior
7
410 - Linguistics
7
361 - Social problems & social welfare in general
6
338 - Production
3
384 - Communications; telecommunication
3
657 - Accounting
3
780 - Music
3
297 - Islam, Babism & Bahai Faith
2
301 - Sociology & anthropology
2
621 - Applied physics
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
331 - Labor economics
1
360 - Social problems & services; associations
1
364 - Criminology
1
519 - Probabilities & applied mathematics
1
550 - Earth sciences
1
590 - Animals (Zoology)
1
more ...