Classification
333 - Economics of land & energy
000 - Computer science, information & general works
3
140 - Specific philosophical schools
2
380 - Commerce, communications & transportation
2
610 - Medicine & health
2
700 - The arts; fine & decorative arts
2
320 - Political science
1
330 - Economics
1
370 - Education
1
410 - Linguistics
1
540 - Chemistry & allied sciences
1
550 - Earth sciences
1