title: [Commemorative sesion of the 7th centennial of Petrus Hispanus -- 20 May 1977].
mesh_terms: D002410:Catholicism / Q000266:history; D049691:History, Medieval; D011174:Portugal; D012384:Rome; D014330:Tropical Medicine / Q000266:history*
vernacular_title: Sessão Comemorativa do 7.o Centenário de Pedro Hispano -- 20 de Maio de 1977.