Classification
700 - The arts; fine & decorative arts
330 - Economics
115
333 - Economics of land & energy
110
600 - Technology
110
320 - Political science
71
000 - Computer science, information & general works
63
900 - History & geography
62
620 - Engineering & allied operations
58
363 - Other social problems & services
54
380 - Commerce, communications & transportation
48
610 - Medicine & health
47
370 - Education
43
140 - Specific philosophical schools
38
658 - General management
28
551 - Geology, hydrology & meteorology
25
720 - Architecture
20
576 - Genetics & evolution
18
630 - Agriculture & related technologies
18
580 - Plants (Botany)
17
340 - Law
16
300 - Social sciences
13
100 - Philosophy & psychology
12
500 - Natural sciences & mathematics
12
304 - Factors affecting social behavior
9
581 - Specific topics in natural history
9
530 - Physics
8
800 - Literature & rhetoric
8
400 - Language
7
160 - Logic
6
520 - Astronomy & allied sciences
6
410 - Linguistics
5
414 - Phonology & phonetics
5
540 - Chemistry & allied sciences
5
780 - Music
5
170 - Ethics
4
297 - Islam, Babism & Bahai Faith
4
657 - Accounting
4
200 - Religion
3
301 - Sociology & anthropology
3
361 - Social problems & social welfare in general
3
550 - Earth sciences
2
615 - Pharmacology & therapeutics
2
770 - Photography, photographs & computer art
2
332 - Financial economics
1
338 - Production
1
350 - Public administration & military science
1
381 - Commerce
1
650 - Management & auxiliary services
1