History 192 Land tenure 86 Motion picture plays, Spanish 67 Architecture 60 Arquitectura 58 History and criticism 57 Historia 52 more ... urban and land use planning 50 General 41 Philosophy 40 Politics and government 37 Planificación urbana y uso de las tierras 36 Educación 33 Land reform 32 Tenencia de la tierra 32 Education 31 Land use 31 Law and legislation 31 Criticism and interpretation 30 Filosofía 30 Social conditions 28 Motion picture plays 25 Social aspects 25 Man-woman relationships 22 Medicina 21 Law 20 Women 20 Ciencias sociales 19 Economic conditions 19 Indians of South America 19 less ...