Classification
600 - Technology
93
700 - The arts; fine & decorative arts
92
620 - Engineering & allied operations
67
900 - History & geography
65
333 - Economics of land & energy
62
000 - Computer science, information & general works
60
363 - Other social problems & services
53
330 - Economics
34
580 - Plants (Botany)
30
610 - Medicine & health
27
414 - Phonology & phonetics
25
380 - Commerce, communications & transportation
23
540 - Chemistry & allied sciences
22
140 - Specific philosophical schools
19
576 - Genetics & evolution
18
658 - General management
13
500 - Natural sciences & mathematics
12
370 - Education
10
320 - Political science
9
720 - Architecture
9
340 - Law
7
551 - Geology, hydrology & meteorology
7
530 - Physics
6
581 - Specific topics in natural history
6
297 - Islam, Babism & Bahai Faith
4
630 - Agriculture & related technologies
4
100 - Philosophy & psychology
3
400 - Language
3
615 - Pharmacology & therapeutics
3
650 - Management & auxiliary services
3
800 - Literature & rhetoric
3
300 - Social sciences
2
304 - Factors affecting social behavior
2
780 - Music
2
170 - Ethics
1
301 - Sociology & anthropology
1
306 - Culture & institutions
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
410 - Linguistics
1
590 - Animals (Zoology)
1
657 - Accounting
1