History 456 Aboriginal Australians 237 Politics and government 168 Social conditions 143 Social life and customs 100 Social aspects 99 Government policy 63 Environmental aspects 60 Management 56 Law and legislation 55 History and criticism 52 Description and travel 47 Economic conditions 46 Foreign relations 45 Race relations 41 World War, 1939-1945 41 Education 38 Climatic changes 33 Discovery and exploration 33 Economic aspects 33 Research 33 Women 33 Study and teaching 32 Immigrants 31 Political aspects 31 Emigration and immigration 28 Food 28 Legal status, laws, etc 27 Government relations 26 Indigenous peoples 26