Classification
140 - Specific philosophical schools
600 - Technology
610 - Medicine & health
700 - The arts; fine & decorative arts
77
620 - Engineering & allied operations
48
000 - Computer science, information & general works
43
333 - Economics of land & energy
42
363 - Other social problems & services
32
900 - History & geography
30
330 - Economics
29
380 - Commerce, communications & transportation
28
580 - Plants (Botany)
19
370 - Education
14
630 - Agriculture & related technologies
12
170 - Ethics
10
320 - Political science
10
400 - Language
10
304 - Factors affecting social behavior
8
340 - Law
8
576 - Genetics & evolution
8
658 - General management
8
300 - Social sciences
7
500 - Natural sciences & mathematics
7
540 - Chemistry & allied sciences
7
800 - Literature & rhetoric
6
361 - Social problems & social welfare in general
5
612 - Human physiology
5
100 - Philosophy & psychology
4
551 - Geology, hydrology & meteorology
4
581 - Specific topics in natural history
4
615 - Pharmacology & therapeutics
4
720 - Architecture
4
530 - Physics
3
200 - Religion
2
301 - Sociology & anthropology
2
410 - Linguistics
2
414 - Phonology & phonetics
2
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
338 - Production
1
350 - Public administration & military science
1
550 - Earth sciences
1
780 - Music
1