Engineering Ingeniería 433 Technology 94 Tecnología 72 General 44 Study and teaching 33 Science 30 Mais ... Periodicals 29 Research 27 Surveying 27 Geomensura 26 Problems, exercises, etc 25 Study and teaching (Higher) 23 Anales 18 Chemical and biochemical 18 Química y bioquímica 18 Geografía 17 Geography 17 Enseñanza de la ingeniería 14 Civil engineering 13 Architecture 12 Ingénierie 12 Management 12 Ingeniera̕ 11 Publicaciones periódicas 11 Building 10 Mechanical engineering 10 Arquitectura 9 History 9 Education 8 menos ...