Classification
610 - Medicine & health
700 - The arts; fine & decorative arts
74
333 - Economics of land & energy
54
600 - Technology
48
363 - Other social problems & services
47
140 - Specific philosophical schools
45
000 - Computer science, information & general works
43
330 - Economics
33
380 - Commerce, communications & transportation
33
900 - History & geography
32
620 - Engineering & allied operations
30
580 - Plants (Botany)
24
370 - Education
22
100 - Philosophy & psychology
18
320 - Political science
13
400 - Language
13
540 - Chemistry & allied sciences
12
551 - Geology, hydrology & meteorology
12
658 - General management
11
170 - Ethics
10
500 - Natural sciences & mathematics
10
576 - Genetics & evolution
10
630 - Agriculture & related technologies
10
300 - Social sciences
8
304 - Factors affecting social behavior
7
340 - Law
7
581 - Specific topics in natural history
7
200 - Religion
6
414 - Phonology & phonetics
6
612 - Human physiology
6
720 - Architecture
6
780 - Music
6
800 - Literature & rhetoric
6
361 - Social problems & social welfare in general
5
615 - Pharmacology & therapeutics
4
520 - Astronomy & allied sciences
2
530 - Physics
2
791 - Public performances
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
301 - Sociology & anthropology
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
398 - Folklore
1
410 - Linguistics
1
657 - Accounting
1
770 - Photography, photographs & computer art
1