Classification
140 - Specific philosophical schools
610 - Medicine & health
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
97
333 - Economics of land & energy
79
600 - Technology
74
363 - Other social problems & services
65
330 - Economics
58
380 - Commerce, communications & transportation
51
620 - Engineering & allied operations
47
580 - Plants (Botany)
45
900 - History & geography
36
320 - Political science
24
370 - Education
24
540 - Chemistry & allied sciences
23
304 - Factors affecting social behavior
20
576 - Genetics & evolution
20
551 - Geology, hydrology & meteorology
16
658 - General management
16
800 - Literature & rhetoric
16
340 - Law
15
581 - Specific topics in natural history
15
612 - Human physiology
15
615 - Pharmacology & therapeutics
15
630 - Agriculture & related technologies
14
400 - Language
13
414 - Phonology & phonetics
13
500 - Natural sciences & mathematics
12
300 - Social sciences
10
170 - Ethics
9
720 - Architecture
9
301 - Sociology & anthropology
6
100 - Philosophy & psychology
5
200 - Religion
5
361 - Social problems & social welfare in general
5
410 - Linguistics
4
530 - Physics
4
297 - Islam, Babism & Bahai Faith
1
338 - Production
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
398 - Folklore
1
550 - Earth sciences
1
657 - Accounting
1
770 - Photography, photographs & computer art
1
780 - Music
1