Periodicals 284 History 75 Vietnam War, 1961-1975 61 American literature 56 In popular culture 46 Education 41 Psychology 41 more ... Nursing 36 Literature 35 Politics and government 35 History and criticism 30 Veterans 26 Study and teaching 25 Science 24 Psychologie 23 Social life and customs 23 Social sciences 23 Management 21 Research 19 Civilization 18 Soins infirmiers 18 Zeitschrift 18 Political science 17 Theology 17 Business 16 Philosophy 16 Books 15 Comic books, strips, etc 15 World politics 15 English literature 13 less ...