Classification
610 - Medicine & health
700 - The arts; fine & decorative arts
900 - History & geography
600 - Technology
130
620 - Engineering & allied operations
119
333 - Economics of land & energy
79
363 - Other social problems & services
41
140 - Specific philosophical schools
37
380 - Commerce, communications & transportation
34
000 - Computer science, information & general works
32
330 - Economics
32
580 - Plants (Botany)
29
720 - Architecture
21
320 - Political science
15
800 - Literature & rhetoric
15
370 - Education
14
100 - Philosophy & psychology
13
551 - Geology, hydrology & meteorology
12
576 - Genetics & evolution
11
300 - Social sciences
10
630 - Agriculture & related technologies
10
340 - Law
9
414 - Phonology & phonetics
8
500 - Natural sciences & mathematics
8
301 - Sociology & anthropology
6
200 - Religion
5
400 - Language
5
540 - Chemistry & allied sciences
5
170 - Ethics
4
612 - Human physiology
4
658 - General management
4
780 - Music
4
360 - Social problems & services; associations
3
530 - Physics
3
581 - Specific topics in natural history
3
615 - Pharmacology & therapeutics
3
297 - Islam, Babism & Bahai Faith
2
410 - Linguistics
2
120 - Epistemology, causation & humankind
1
304 - Factors affecting social behavior
1
361 - Social problems & social welfare in general
1
398 - Folklore
1
520 - Astronomy & allied sciences
1
550 - Earth sciences
1
657 - Accounting
1
770 - Photography, photographs & computer art
1
830 - Literatures of Germanic languages
1