Classification
330 - Economics
227
320 - Political science
190
700 - The arts; fine & decorative arts
152
600 - Technology
107
340 - Law
74
620 - Engineering & allied operations
65
900 - History & geography
63
000 - Computer science, information & general works
58
610 - Medicine & health
49
333 - Economics of land & energy
48
540 - Chemistry & allied sciences
40
363 - Other social problems & services
36
580 - Plants (Botany)
27
380 - Commerce, communications & transportation
19
414 - Phonology & phonetics
19
140 - Specific philosophical schools
17
576 - Genetics & evolution
12
800 - Literature & rhetoric
8
300 - Social sciences
7
304 - Factors affecting social behavior
7
530 - Physics
7
730 - Plastic arts; sculpture
7
541 - Physical chemistry
5
581 - Specific topics in natural history
5
551 - Geology, hydrology & meteorology
4
612 - Human physiology
4
630 - Agriculture & related technologies
4
500 - Natural sciences & mathematics
3
660 - Chemical engineering
3
301 - Sociology & anthropology
2
370 - Education
2
570 - Life sciences; biology
2
621 - Applied physics
2
628 - Sanitary & municipal engineering
2
661 - Industrial chemicals
2
720 - Architecture
2
100 - Philosophy & psychology
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
332 - Financial economics
1
338 - Production
1
400 - Language
1
410 - Linguistics
1
546 - Inorganic chemistry
1
547 - Organic chemistry
1
658 - General management
1
666 - Ceramic & allied technologies
1
686 - Printing & related activities
1
930 - History of ancient world to ca. 499
1