Classification
540 - Chemistry & allied sciences
4
333 - Economics of land & energy
3
363 - Other social problems & services
3
000 - Computer science, information & general works
2
574 - [Unassigned]
2
610 - Medicine & health
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
330 - Economics
1
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
546 - Inorganic chemistry
1
572 - Biochemistry
1
576 - Genetics & evolution
1
600 - Technology
1
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
1
800 - Literature & rhetoric
1