Land tenure 86 History 83 Motion picture plays, Spanish 67 Architecture 57 Arquitectura 55 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 Criticism and interpretation 27 History and criticism 26 Motion picture plays 25 Law and legislation 23 Politics and government 23 Man-woman relationships 22 American literature 17 Historia 17 Social conditions 16 Planificación urbana y de uso de las tierras 14 Storyboards 14 Mexican Americans 13 Reforma agraria 13 Indians of South America 12 Literature 12 Urbanization 12 Economic conditions 11 Literatura 11 Agriculture 10 Spanish drama 10 less ...