Classification
600 - Technology
700 - The arts; fine & decorative arts
620 - Engineering & allied operations
196
333 - Economics of land & energy
184
900 - History & geography
175
000 - Computer science, information & general works
101
330 - Economics
81
363 - Other social problems & services
81
380 - Commerce, communications & transportation
69
580 - Plants (Botany)
55
610 - Medicine & health
49
630 - Agriculture & related technologies
34
576 - Genetics & evolution
32
140 - Specific philosophical schools
30
720 - Architecture
30
500 - Natural sciences & mathematics
26
551 - Geology, hydrology & meteorology
23
340 - Law
21
320 - Political science
18
370 - Education
15
658 - General management
13
800 - Literature & rhetoric
13
414 - Phonology & phonetics
11
540 - Chemistry & allied sciences
10
530 - Physics
9
581 - Specific topics in natural history
7
400 - Language
5
410 - Linguistics
4
612 - Human physiology
4
100 - Philosophy & psychology
3
300 - Social sciences
3
657 - Accounting
3
170 - Ethics
2
304 - Factors affecting social behavior
2
361 - Social problems & social welfare in general
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
200 - Religion
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
770 - Photography, photographs & computer art
1