Classification
330 - Economics
610 - Medicine & health
630 - Agriculture & related technologies
363 - Other social problems & services
31
320 - Political science
29
600 - Technology
28
333 - Economics of land & energy
24
700 - The arts; fine & decorative arts
24
000 - Computer science, information & general works
18
140 - Specific philosophical schools
15
580 - Plants (Botany)
15
620 - Engineering & allied operations
15
304 - Factors affecting social behavior
14
551 - Geology, hydrology & meteorology
14
900 - History & geography
11
370 - Education
10
581 - Specific topics in natural history
9
300 - Social sciences
8
658 - General management
8
340 - Law
4
380 - Commerce, communications & transportation
4
540 - Chemistry & allied sciences
4
100 - Philosophy & psychology
2
301 - Sociology & anthropology
2
520 - Astronomy & allied sciences
2
297 - Islam, Babism & Bahai Faith
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
550 - Earth sciences
1
576 - Genetics & evolution
1
612 - Human physiology
1
657 - Accounting
1