Classification
330 - Economics
183
700 - The arts; fine & decorative arts
151
600 - Technology
143
620 - Engineering & allied operations
105
610 - Medicine & health
97
000 - Computer science, information & general works
95
333 - Economics of land & energy
92
900 - History & geography
88
363 - Other social problems & services
53
580 - Plants (Botany)
38
540 - Chemistry & allied sciences
35
140 - Specific philosophical schools
29
380 - Commerce, communications & transportation
29
500 - Natural sciences & mathematics
21
576 - Genetics & evolution
21
340 - Law
16
414 - Phonology & phonetics
14
551 - Geology, hydrology & meteorology
14
720 - Architecture
12
410 - Linguistics
11
800 - Literature & rhetoric
10
304 - Factors affecting social behavior
9
530 - Physics
9
370 - Education
8
630 - Agriculture & related technologies
8
658 - General management
8
100 - Philosophy & psychology
6
300 - Social sciences
5
320 - Political science
5
510 - Mathematics
5
547 - Organic chemistry
5
581 - Specific topics in natural history
4
170 - Ethics
3
400 - Language
3
657 - Accounting
3
541 - Physical chemistry
2
574 - [Unassigned]
2
612 - Human physiology
2
615 - Pharmacology & therapeutics
2
160 - Logic
1
361 - Social problems & social welfare in general
1
512 - Algebra
1
570 - Life sciences; biology
1
572 - Biochemistry
1
616 - Diseases
1
628 - Sanitary & municipal engineering
1
660 - Chemical engineering
1
664 - Food technology
1
668 - Technology of other organic products
1