History 222 Plantas 140 History and criticism 108 Plants 86 Botany 84 Botánica 83 Publicaciones periódicas 72 more ... Agricultura 67 Motion picture plays, Spanish 67 Periodicals 67 General 66 Agriculture 62 Criticism and interpretation 50 Tecnología 49 Historia 48 Politics and government 48 Technology 47 Spanish literature 38 Planta 36 Science 36 Arquitectura 34 Nature 34 Architecture 33 Human rights 32 Naturaleza 32 Social aspects 32 Education 31 Philosophy 31 Plant diseases 29 Agronomía 27 less ...