Classification
576 - Genetics & evolution
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
168
600 - Technology
168
333 - Economics of land & energy
140
900 - History & geography
128
620 - Engineering & allied operations
116
380 - Commerce, communications & transportation
68
363 - Other social problems & services
67
610 - Medicine & health
65
330 - Economics
63
500 - Natural sciences & mathematics
55
580 - Plants (Botany)
46
140 - Specific philosophical schools
44
320 - Political science
35
540 - Chemistry & allied sciences
27
340 - Law
26
720 - Architecture
25
530 - Physics
24
800 - Literature & rhetoric
24
551 - Geology, hydrology & meteorology
23
658 - General management
23
414 - Phonology & phonetics
20
581 - Specific topics in natural history
17
370 - Education
16
300 - Social sciences
12
630 - Agriculture & related technologies
12
304 - Factors affecting social behavior
11
400 - Language
11
100 - Philosophy & psychology
10
170 - Ethics
7
301 - Sociology & anthropology
7
612 - Human physiology
6
410 - Linguistics
5
200 - Religion
4
615 - Pharmacology & therapeutics
3
770 - Photography, photographs & computer art
3
780 - Music
3
791 - Public performances
3
297 - Islam, Babism & Bahai Faith
2
650 - Management & auxiliary services
2
160 - Logic
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
398 - Folklore
1
550 - Earth sciences
1
657 - Accounting
1