Classification
363 - Other social problems & services
610 - Medicine & health
73
700 - The arts; fine & decorative arts
70
330 - Economics
66
333 - Economics of land & energy
63
600 - Technology
53
000 - Computer science, information & general works
49
620 - Engineering & allied operations
41
320 - Political science
39
140 - Specific philosophical schools
37
900 - History & geography
36
380 - Commerce, communications & transportation
34
551 - Geology, hydrology & meteorology
29
500 - Natural sciences & mathematics
23
340 - Law
18
370 - Education
18
658 - General management
16
576 - Genetics & evolution
15
581 - Specific topics in natural history
14
540 - Chemistry & allied sciences
12
300 - Social sciences
11
580 - Plants (Botany)
11
630 - Agriculture & related technologies
8
720 - Architecture
8
304 - Factors affecting social behavior
7
361 - Social problems & social welfare in general
7
400 - Language
7
628 - Sanitary & municipal engineering
7
800 - Literature & rhetoric
7
100 - Philosophy & psychology
6
612 - Human physiology
6
170 - Ethics
5
200 - Religion
5
301 - Sociology & anthropology
5
414 - Phonology & phonetics
5
331 - Labor economics
3
410 - Linguistics
3
530 - Physics
3
615 - Pharmacology & therapeutics
3
297 - Islam, Babism & Bahai Faith
2
364 - Criminology
2
001 - Knowledge
1
160 - Logic
1
332 - Financial economics
1
338 - Production
1
350 - Public administration & military science
1
362 - Social welfare problems & services
1
368 - Insurance
1
509 - Historical, geographic & persons treatment
1
550 - Earth sciences
1
more ...