History 257 Treatment 132 Social life and customs 116 World War, 1939-1945 97 Social conditions 88 Politics and government 86 African Americans 85 more ... Exercise 84 Physical education and training 81 Physical fitness 73 Civil rights 61 Prevention 51 Race relations 51 Vietnam War, 1961-1975 50 Motion picture producers and directors 48 Psychological aspects 48 Economic conditions 45 Psychotherapy 44 Exercise therapy 43 Study and teaching 43 Political activity 41 Children 39 Civil rights movements 39 Civil rights workers 38 Social aspects 38 Economic aspects 37 Rites and ceremonies 37 Women 37 Documentary films 36 Education 36 less ...