Classification
363 - Other social problems & services
93
600 - Technology
630 - Agriculture & related technologies
620 - Engineering & allied operations
59
700 - The arts; fine & decorative arts
43
330 - Economics
35
333 - Economics of land & energy
32
610 - Medicine & health
26
000 - Computer science, information & general works
18
320 - Political science
17
580 - Plants (Botany)
15
304 - Factors affecting social behavior
13
551 - Geology, hydrology & meteorology
13
900 - History & geography
13
414 - Phonology & phonetics
11
581 - Specific topics in natural history
11
140 - Specific philosophical schools
10
370 - Education
10
300 - Social sciences
8
380 - Commerce, communications & transportation
8
720 - Architecture
6
540 - Chemistry & allied sciences
5
576 - Genetics & evolution
5
340 - Law
4
100 - Philosophy & psychology
3
170 - Ethics
3
301 - Sociology & anthropology
3
500 - Natural sciences & mathematics
3
658 - General management
3
350 - Public administration & military science
2
800 - Literature & rhetoric
2
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
530 - Physics
1
590 - Animals (Zoology)
1
612 - Human physiology
1