History 91 Land tenure 86 Architecture 57 Arquitectura 55 urban and land use planning 50 Planificación urbana y uso de las tierras 36 Land reform 32 more ... Tenencia de la tierra 32 Land use 31 Law and legislation 25 Politics and government 22 History and criticism 21 Historia 18 Criticism and interpretation 17 Social conditions 15 Planificación urbana y de uso de las tierras 14 Spanish literature 14 Reforma agraria 13 Urbanization 13 Indians of South America 12 Economic conditions 11 Antiquities 10 Mexican Americans 10 Government relations 9 Land use, Urban 9 Rural conditions 9 Excavations (Archaeology) 8 Land settlement 8 Literatura española 8 Literature 8 less ...