Classification
140 - Specific philosophical schools
380 - Commerce, communications & transportation
320 - Political science
2
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
304 - Factors affecting social behavior
1
340 - Law
1
370 - Education
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
620 - Engineering & allied operations
1