Classification
338 - Production
24
363 - Other social problems & services
17
333 - Economics of land & energy
15
330 - Economics
14
000 - Computer science, information & general works
11
320 - Political science
9
174 - Occupational ethics
8
551 - Geology, hydrology & meteorology
8
700 - The arts; fine & decorative arts
8
600 - Technology
7
658 - General management
7
670 - Manufacturing
6
620 - Engineering & allied operations
5
580 - Plants (Botany)
4
610 - Medicine & health
4
630 - Agriculture & related technologies
4
380 - Commerce, communications & transportation
3
540 - Chemistry & allied sciences
3
621 - Applied physics
3
140 - Specific philosophical schools
2
300 - Social sciences
2
340 - Law
2
553 - Economic geology
2
576 - Genetics & evolution
2
581 - Specific topics in natural history
2
628 - Sanitary & municipal engineering
2
710 - Civic & landscape art
2
900 - History & geography
2
100 - Philosophy & psychology
1
304 - Factors affecting social behavior
1
331 - Labor economics
1
337 - International economics
1
339 - Macroeconomics & related topics
1
341 - Law of nations
1
361 - Social problems & social welfare in general
1
370 - Education
1
410 - Linguistics
1
414 - Phonology & phonetics
1
420 - English & Old English
1
500 - Natural sciences & mathematics
1
519 - Probabilities & applied mathematics
1
546 - Inorganic chemistry
1
550 - Earth sciences
1
612 - Human physiology
1
657 - Accounting
1
720 - Architecture
1