Classification
372 - Elementary education
12
305 - Social groups
6
306 - Culture & institutions
5
301 - Sociology & anthropology
3
370 - Education
2
128 - Humankind
1
153 - Mental processes & intelligence
1
361 - Social problems & social welfare in general
1
571 - Physiology & related subjects
1
612 - Human physiology
1
613 - Personal health & safety
1
618 - Gynecology, obstetrics, pediatrics & geriatrics
1
780 - Music
1