Vietnam War, 1961-1975 History 151 Politics and government 90 Veterans 71 Foreign relations 60 Protest movements 55 Influence 32 more ... Literature and the war 29 History and criticism 28 Psychological aspects 26 Public opinion 26 Social aspects 26 Agent Orange 24 Health aspects 24 Social conditions 24 Health risk assessment 19 Toxicology 19 Women 18 Political aspects 16 Post-traumatic stress disorder 16 American literature 15 Peace 15 Soldiers 15 Diplomatic history 14 Political activity 14 Aerial operations, American 13 Campaigns 13 Indochinese War, 1946-1954 13 Mental health 13 Officers 12 less ...