Classification
120 - Epistemology, causation & humankind
140 - Specific philosophical schools
1
170 - Ethics
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
340 - Law
370 - Education
530 - Physics
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
700 - The arts; fine & decorative arts
1