History 149 Land tenure 86 Motion picture plays, Spanish 67 History and criticism 61 Architecture 59 Arquitectura 58 urban and land use planning 50 more ... Historia 47 Educación 42 General 40 Education 38 Philosophy 36 Planificación urbana y uso de las tierras 36 Criticism and interpretation 33 Land reform 32 Tenencia de la tierra 32 Filosofía 31 Land use 31 Law and legislation 31 Social conditions 28 Motion picture plays 25 Medicina 23 Politics and government 23 Man-woman relationships 22 Science 22 Women 20 Economic conditions 19 Ciencias sociales 17 Indians of South America 17 Research 17 less ...