Classification
380 - Commerce, communications & transportation
620 - Engineering & allied operations
600 - Technology
205
900 - History & geography
169
700 - The arts; fine & decorative arts
134
333 - Economics of land & energy
114
363 - Other social problems & services
69
000 - Computer science, information & general works
64
330 - Economics
39
140 - Specific philosophical schools
34
576 - Genetics & evolution
32
610 - Medicine & health
32
580 - Plants (Botany)
29
551 - Geology, hydrology & meteorology
27
500 - Natural sciences & mathematics
26
320 - Political science
16
720 - Architecture
15
630 - Agriculture & related technologies
14
658 - General management
14
340 - Law
13
414 - Phonology & phonetics
12
540 - Chemistry & allied sciences
11
370 - Education
10
304 - Factors affecting social behavior
7
530 - Physics
7
800 - Literature & rhetoric
7
581 - Specific topics in natural history
6
612 - Human physiology
6
400 - Language
5
100 - Philosophy & psychology
3
300 - Social sciences
3
410 - Linguistics
3
550 - Earth sciences
3
361 - Social problems & social welfare in general
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
200 - Religion
1
331 - Labor economics
1
381 - Commerce
1
384 - Communications; telecommunication
1
615 - Pharmacology & therapeutics
1
621 - Applied physics
1
650 - Management & auxiliary services
1
657 - Accounting
1
770 - Photography, photographs & computer art
1