301 Sociology & anthropology
302 Social interaction
302.2 Communication
302.5 Relation of the individual to society
303 Social processes
303.6 Conflict
304 Factors affecting social behavior
304.6 Population
305 Social groups
305.2 Age groups
305.8 Racial, ethnic, national groups
306.8 Marriage and family
306.9 Institutions pertaining to death
307 Communities
307.2 Population