History 116 Land tenure 86 Architecture 63 Arquitectura 59 urban and land use planning 50 History and criticism 44 Planificación urbana y uso de las tierras 36 more ... Politics and government 34 Land reform 32 Tenencia de la tierra 32 Land use 31 Philosophy 29 Social conditions 27 Historia 24 Law and legislation 24 Criticism and interpretation 21 Social aspects 20 Indians of South America 19 Education 18 Social life and customs 16 Law 14 Planificación urbana y de uso de las tierras 14 Economic conditions 13 Reforma agraria 13 Urbanization 13 Rural conditions 12 General 11 Mexican Americans 11 Spanish literature 11 Government relations 10 less ...