Classification
600 - Technology
620 - Engineering & allied operations
241
700 - The arts; fine & decorative arts
190
900 - History & geography
180
333 - Economics of land & energy
143
000 - Computer science, information & general works
75
610 - Medicine & health
70
363 - Other social problems & services
61
380 - Commerce, communications & transportation
61
330 - Economics
56
580 - Plants (Botany)
42
540 - Chemistry & allied sciences
32
340 - Law
25
140 - Specific philosophical schools
24
576 - Genetics & evolution
23
320 - Political science
22
414 - Phonology & phonetics
22
630 - Agriculture & related technologies
22
370 - Education
19
500 - Natural sciences & mathematics
17
551 - Geology, hydrology & meteorology
13
720 - Architecture
13
530 - Physics
12
304 - Factors affecting social behavior
11
100 - Philosophy & psychology
9
170 - Ethics
9
300 - Social sciences
9
800 - Literature & rhetoric
7
612 - Human physiology
6
658 - General management
5
400 - Language
4
581 - Specific topics in natural history
4
301 - Sociology & anthropology
2
350 - Public administration & military science
2
615 - Pharmacology & therapeutics
2
650 - Management & auxiliary services
2
005 - Computer programming, programs & data
1
160 - Logic
1
336 - Public finance
1
362 - Social welfare problems & services
1
628 - Sanitary & municipal engineering
1
745 - Decorative arts
1