Classification
000 - Computer science, information & general works
361 - Social problems & social welfare in general
610 - Medicine & health
19
363 - Other social problems & services
15
600 - Technology
15
700 - The arts; fine & decorative arts
15
330 - Economics
12
333 - Economics of land & energy
11
140 - Specific philosophical schools
9
320 - Political science
9
380 - Commerce, communications & transportation
8
630 - Agriculture & related technologies
8
620 - Engineering & allied operations
7
580 - Plants (Botany)
6
658 - General management
5
612 - Human physiology
4
900 - History & geography
4
200 - Religion
3
500 - Natural sciences & mathematics
3
551 - Geology, hydrology & meteorology
3
576 - Genetics & evolution
3
590 - Animals (Zoology)
3
170 - Ethics
2
304 - Factors affecting social behavior
2
360 - Social problems & services; associations
2
370 - Education
2
414 - Phonology & phonetics
2
581 - Specific topics in natural history
2
800 - Literature & rhetoric
2
301 - Sociology & anthropology
1
340 - Law
1
350 - Public administration & military science
1
540 - Chemistry & allied sciences
1
650 - Management & auxiliary services
1
780 - Music
1