1 "Ficheiro:The_education_of_man_(IA_educationofman00frbe).pdf".

Ficheiro:The education of man (IA educationofman00frbe).pdf

used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:The_education_of_man_(IA_educationofman00frbe).pdf...