History 136 Land tenure 86 Motion picture plays, Spanish 67 Architecture 60 Arquitectura 57 urban and land use planning 50 Planificación urbana y uso de las tierras 36 more ... Land reform 32 Tenencia de la tierra 32 Land use 31 Politics and government 31 Historia 29 History and criticism 29 Law and legislation 27 Criticism and interpretation 25 Motion picture plays 25 Man-woman relationships 22 Social aspects 21 Social conditions 17 Law 16 Derecho 15 Indians of South America 15 Philosophy 15 Planificación urbana y de uso de las tierras 14 Storyboards 14 Mexican Americans 13 Reforma agraria 13 Urbanization 13 Women 13 Economic conditions 12 less ...