TY - BOOK T1 - International understanding : As an integral part of the school curriculum PP - ParĂ­s PB - UNESCO YR - 1968 UL - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.108717 OP - 240 KW - EDUCACION-PLANES DE ESTUDIO ER -