Filtering by: Date 1960 Remove constraint Date: 1960 Format (Original) Periodicals Remove constraint Format (Original): Periodicals Language Portuguese Remove constraint Language: Portuguese Collection Latin America Collection Remove constraint Collection: Latin America Collection Subject Centro Regional de Pesquisas Educacionais do Rio Grande do Sul--Periodicals Remove constraint Subject: Centro Regional de Pesquisas Educacionais do Rio Grande do Sul--Periodicals Type Text Remove constraint Type: Text