History 141 Land tenure 86 Motion picture plays, Spanish 67 Architecture 60 Arquitectura 57 urban and land use planning 50 Agriculture 38 more ... Agronomía 36 Planificación urbana y uso de las tierras 36 History and criticism 35 Agronomy 34 Politics and government 33 Land reform 32 Tenencia de la tierra 32 Agricultura 31 Historia 31 Land use 31 Animal science 30 Criticism and interpretation 29 Law and legislation 29 Agronomia 27 Motion picture plays 25 Man-woman relationships 23 Technology 19 Tecnología 19 Social aspects 18 Social conditions 17 Cattle 16 Ganado 16 Science 16 less ...