History 257 Social aspects 115 Social life and customs 105 Folklore 66 Ethnology 55 Philosophy 51 Human ecology 45 Environmental conditions 41 Sports 40 Social conditions 39 Anthropology 30 Dance 30 Tales 30 Environmental policy 29 Antiquities 28 Environmentalism 26 Political aspects 25 History and criticism 24 Baseball 23 Effect of human beings on 21 Politics and government 21 Religious aspects 21 Nature 20 Food habits 18 Anthropologists 17 Environmental aspects 17 Oral tradition 16 Fieldwork 15 Discrimination in sports 14 Excavations (Archaeology) 14