Land tenure 86 History 85 Motion picture plays, Spanish 67 Architecture 59 Arquitectura 56 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 Law and legislation 30 Education 29 Motion picture plays 25 Educación 24 History and criticism 23 Man-woman relationships 22 Politics and government 22 Criticism and interpretation 20 Curricula 17 Historia 17 Social conditions 17 Urbanization 16 Planificación urbana y de uso de las tierras 14 Storyboards 14 Mexican Americans 13 Reforma agraria 13 Women 13 City planning 12 Economic conditions 12 Indians of South America 12 less ...