Classification
380 - Commerce, communications & transportation
4
576 - Genetics & evolution
800 - Literature & rhetoric
333 - Economics of land & energy
3
363 - Other social problems & services
3
320 - Political science
2
330 - Economics
2
410 - Linguistics
2
304 - Factors affecting social behavior
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
600 - Technology
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1