Classification
363 - Other social problems & services
551 - Geology, hydrology & meteorology
620 - Engineering & allied operations
600 - Technology
101
333 - Economics of land & energy
52
900 - History & geography
49
700 - The arts; fine & decorative arts
44
330 - Economics
31
630 - Agriculture & related technologies
26
320 - Political science
24
000 - Computer science, information & general works
23
380 - Commerce, communications & transportation
19
140 - Specific philosophical schools
18
580 - Plants (Botany)
18
610 - Medicine & health
17
581 - Specific topics in natural history
14
500 - Natural sciences & mathematics
10
540 - Chemistry & allied sciences
9
414 - Phonology & phonetics
8
576 - Genetics & evolution
8
300 - Social sciences
7
370 - Education
7
720 - Architecture
6
612 - Human physiology
4
170 - Ethics
3
400 - Language
3
530 - Physics
3
550 - Earth sciences
3
658 - General management
3
100 - Philosophy & psychology
2
304 - Factors affecting social behavior
2
340 - Law
2
350 - Public administration & military science
2
590 - Animals (Zoology)
2
360 - Social problems & services; associations
1