Library of Congress call numbers group books by topic. The following are some you might find useful.
BF 531-593: Psychology -- Emotion
GN: Anthropology
HA: Social science statistics.
HM: Sociology (general and theoretical). Social psychology.
HN: Social history. Social problems. Social reform.
HQ: The family. Marriage. Women. Feminism.
HT: Communities. Classes. Races. Slavery.
HV: Social and public welfare. Substance abuse. Criminology.