title: Sources of social change in community, family, and fertility in a Puerto Rican town.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005190:Family; D005260:Female; D005298:Fertility; D006801:Humans; D008297:Male; D008875:Middle Aged; D011647:Puerto Rico; D012924:Social Conditions