History 116 Land tenure 86 Motion picture plays, Spanish 67 Architecture 59 Arquitectura 57 urban and land use planning 50 Control de plagas 43 more ... Planificación urbana y uso de las tierras 36 Law and legislation 34 Land reform 32 Tenencia de la tierra 32 Historia 31 History and criticism 31 Land use 31 Plant diseases 28 Technology 28 Tecnología 28 Criticism and interpretation 26 Motion picture plays 25 Plagas 25 Politics and government 24 Social conditions 24 Man-woman relationships 22 Pest control 22 Insect pests 19 Public administration 19 Administración pública 18 Agricultura 18 Agriculture 18 Cultivos 18 less ...