Classification
330 - Economics
140
301 - Sociology & anthropology
48
363 - Other social problems & services
15
551 - Geology, hydrology & meteorology
15
333 - Economics of land & energy
12
336 - Public finance
12
320 - Political science
11
305 - Social groups
10
499 - Austronesian & other languages
10
610 - Medicine & health
10
300 - Social sciences
9
304 - Factors affecting social behavior
9
338 - Production
8
400 - Language
8
577 - Ecology
7
700 - The arts; fine & decorative arts
7
900 - History & geography
7
306 - Culture & institutions
6
630 - Agriculture & related technologies
6
995 - Melanesia; New Guinea
6
410 - Linguistics
5
580 - Plants (Botany)
5
200 - Religion
4
340 - Law
4
355 - Military science
4
370 - Education
4
380 - Commerce, communications & transportation
4
510 - Mathematics
4
780 - Music
4
362 - Social welfare problems & services
3
550 - Earth sciences
3
000 - Computer science, information & general works
2
133 - Specific topics in parapsychology & occultism
2
140 - Specific philosophical schools
2
266 - Missions
2
303 - Social processes
2
324 - The political process
2
327 - International relations
2
342 - Constitutional & administrative law
2
378 - Higher education
2
415 - Grammar
2
418 - Standard usage & applied linguistics
2
526 - Mathematical geography
2
578 - Natural history of organisms
2
581 - Specific topics in natural history
2
600 - Technology
2
612 - Human physiology
2
616 - Diseases
2
621 - Applied physics
2
781 - General principles & musical forms
2
more ...