Classification
610 - Medicine & health
320 - Political science
4
140 - Specific philosophical schools
3
380 - Commerce, communications & transportation
3
100 - Philosophy & psychology
1
170 - Ethics
1
330 - Economics
1
340 - Law
1
362 - Social welfare problems & services
1
551 - Geology, hydrology & meteorology
1
616 - Diseases
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1