Classification
330 - Economics
700 - The arts; fine & decorative arts
900 - History & geography
320 - Political science
252
600 - Technology
159
620 - Engineering & allied operations
143
333 - Economics of land & energy
125
363 - Other social problems & services
72
000 - Computer science, information & general works
67
380 - Commerce, communications & transportation
61
140 - Specific philosophical schools
39
300 - Social sciences
37
576 - Genetics & evolution
37
370 - Education
36
610 - Medicine & health
32
720 - Architecture
29
340 - Law
28
580 - Plants (Botany)
24
800 - Literature & rhetoric
24
551 - Geology, hydrology & meteorology
21
630 - Agriculture & related technologies
21
100 - Philosophy & psychology
20
658 - General management
18
301 - Sociology & anthropology
13
400 - Language
13
500 - Natural sciences & mathematics
13
780 - Music
12
200 - Religion
11
304 - Factors affecting social behavior
11
410 - Linguistics
9
770 - Photography, photographs & computer art
9
530 - Physics
8
581 - Specific topics in natural history
8
170 - Ethics
7
414 - Phonology & phonetics
7
540 - Chemistry & allied sciences
5
160 - Logic
3
297 - Islam, Babism & Bahai Faith
3
791 - Public performances
3
360 - Social problems & services; associations
2
120 - Epistemology, causation & humankind
1
382 - International commerce
1
520 - Astronomy & allied sciences
1
550 - Earth sciences
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1