Classification
380 - Commerce, communications & transportation
610 - Medicine & health
700 - The arts; fine & decorative arts
150
333 - Economics of land & energy
119
000 - Computer science, information & general works
108
140 - Specific philosophical schools
95
363 - Other social problems & services
87
600 - Technology
82
330 - Economics
60
580 - Plants (Botany)
51
620 - Engineering & allied operations
50
370 - Education
46
900 - History & geography
42
576 - Genetics & evolution
34
320 - Political science
26
551 - Geology, hydrology & meteorology
23
658 - General management
23
500 - Natural sciences & mathematics
22
612 - Human physiology
22
720 - Architecture
21
400 - Language
19
540 - Chemistry & allied sciences
19
340 - Law
18
100 - Philosophy & psychology
16
304 - Factors affecting social behavior
16
615 - Pharmacology & therapeutics
16
800 - Literature & rhetoric
13
300 - Social sciences
12
630 - Agriculture & related technologies
12
170 - Ethics
10
581 - Specific topics in natural history
9
410 - Linguistics
7
414 - Phonology & phonetics
6
361 - Social problems & social welfare in general
4
200 - Religion
3
364 - Criminology
2
530 - Physics
2
590 - Animals (Zoology)
2
780 - Music
2
296 - Judaism
1
301 - Sociology & anthropology
1
360 - Social problems & services; associations
1
550 - Earth sciences
1
657 - Accounting
1