Classification
306 - Culture & institutions
45
610 - Medicine & health
15
305 - Social groups
9
361 - Social problems & social welfare in general
6
613 - Personal health & safety
6
150 - Psychology
5
304 - Factors affecting social behavior
5
372 - Elementary education
3
155 - Differential & developmental psychology
2
301 - Sociology & anthropology
2
302 - Social interaction
2
307 - Communities
2
320 - Political science
2
330 - Economics
2
362 - Social welfare problems & services
2
614 - Incidence & prevention of disease
2
658 - General management
2
303 - Social processes
1
327 - International relations
1
333 - Economics of land & energy
1
338 - Production
1
551 - Geology, hydrology & meteorology
1
570 - Life sciences; biology
1
616 - Diseases
1
641 - Food & drink
1
650 - Management & auxiliary services
1