Classification
800 - Literature & rhetoric
140 - Specific philosophical schools
2
304 - Factors affecting social behavior
2
330 - Economics
2
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2
400 - Language
2
600 - Technology
2
610 - Medicine & health
2
700 - The arts; fine & decorative arts
2
370 - Education
1