Classification
600 - Technology
610 - Medicine & health
11
700 - The arts; fine & decorative arts
11
900 - History & geography
7
000 - Computer science, information & general works
6
363 - Other social problems & services
6
620 - Engineering & allied operations
6
333 - Economics of land & energy
5
330 - Economics
4
320 - Political science
3
370 - Education
2
380 - Commerce, communications & transportation
2
580 - Plants (Botany)
2
800 - Literature & rhetoric
2
170 - Ethics
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
340 - Law
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
630 - Agriculture & related technologies
1
770 - Photography, photographs & computer art
1