Classification
140 - Specific philosophical schools
600 - Technology
700 - The arts; fine & decorative arts
201
620 - Engineering & allied operations
178
900 - History & geography
142
000 - Computer science, information & general works
129
333 - Economics of land & energy
125
610 - Medicine & health
123
363 - Other social problems & services
99
330 - Economics
92
380 - Commerce, communications & transportation
85
320 - Political science
52
370 - Education
47
580 - Plants (Botany)
39
170 - Ethics
29
400 - Language
29
576 - Genetics & evolution
29
630 - Agriculture & related technologies
29
100 - Philosophy & psychology
28
551 - Geology, hydrology & meteorology
25
340 - Law
24
800 - Literature & rhetoric
23
581 - Specific topics in natural history
22
720 - Architecture
22
500 - Natural sciences & mathematics
21
658 - General management
21
300 - Social sciences
20
304 - Factors affecting social behavior
16
301 - Sociology & anthropology
12
410 - Linguistics
12
361 - Social problems & social welfare in general
11
540 - Chemistry & allied sciences
11
612 - Human physiology
11
530 - Physics
10
200 - Religion
9
780 - Music
8
414 - Phonology & phonetics
6
615 - Pharmacology & therapeutics
4
120 - Epistemology, causation & humankind
2
297 - Islam, Babism & Bahai Faith
2
657 - Accounting
2
160 - Logic
1
336 - Public finance
1
338 - Production
1
350 - Public administration & military science
1
364 - Criminology
1
550 - Earth sciences
1
770 - Photography, photographs & computer art
1
791 - Public performances
1