History 104 Land tenure 86 Architecture 59 Arquitectura 57 urban and land use planning 50 Planificación urbana y uso de las tierras 36 Historia 32 more ... Land reform 32 Tenencia de la tierra 32 Land use 31 Law and legislation 27 History and criticism 25 Politics and government 20 Social conditions 19 Spanish language 18 Education 16 Economic conditions 14 Educación 14 Planificación urbana y de uso de las tierras 14 Indians of South America 13 Reforma agraria 13 Criticism and interpretation 12 Urbanization 12 Philosophy 11 Agriculture 9 Government relations 9 Land use, Urban 9 Relations 9 Rural conditions 9 Science 9 less ...