Man-woman relationships 617 History 373 Families 218 Murder 126 Social life and customs 122 Women 119 World War, 1939-1945 105 Social conditions 92 Friendship 91 Politics and government 84 Investigation 73 Fathers and sons 66 Conduct of life 61 Revenge 58 Adultery 57 Fathers and daughters 56 African Americans 49 Social aspects 49 Sexual behavior 48 Criminal investigation 47 Love 47 Mothers and daughters 47 Police 46 Brothers 45 Criminals 45 Gangsters 44 Death 42 Good and evil 42 Married people 41 Teenagers 41 High school students 39 Journalists 39 Male friendship 39 Race relations 39 Triangles (Interpersonal relations) 38 Presidents 37 Criminal behavior 35 Mothers and sons 35 Motion picture producers and directors 35 Sisters 35 Human-alien encounters 33 Siblings 33 Female friendship 32 Jews 32 Kings and rulers 32 Motion pictures 32 Orphans 31 Young women 31 Spies 30 World War, 1914-1918 30 rhagor ...