In 1993, there were eight scientific and technological research institutes and learned societies in Paraguay, all of them located in Asunción. Notable among them are the Paraguayan Scientific Society, founded in 1921, and the South American Union of Engineers' Associations, established in 1935. The "Nuestra Senora de la Asunción" Catholic University, founded in 1960 at Asunción, has a faculty of science and technology. The National University of Asunción, founded in 1889, has faculties of medicine, dentistry, chemistry, exact and natural sciences, physical sciences and mathematics, veterinary sciences, and agricultural engineering. The Higher School of Philosophy, Sciences and Education, also in Asunción, was founded in 1944. In 1987–97, science and engineering students accounted for 20% of college and university enrollments.