History 144 World War, 1939-1945 94 African Americans 78 Social life and customs 68 Treatment 58 Civil rights 54 Vietnam War, 1961-1975 47 més ... Physical education and training 40 Civil rights movements 38 Documentary films 38 Civil rights workers 37 Politics and government 37 Political activity 34 Rites and ceremonies 33 Children 32 Race relations 32 Exercise 30 Youth 29 Social conditions 27 Foreign relations 26 Coming of age 25 Instruction and study 25 Counseling 23 Economic conditions 23 Physical therapy 23 Symphonies 22 Music 21 Physical fitness 21 Athletes 20 Piano music 20 menys ...