Renaud, Gérard Experimental period of the International Baccalaureate : objetives and results / Gérard Renaud. - París : Ginebra : UNESCO ; OIE, 1974. - 69 p. - Experiments and innovations in education ; 14 . ISBN: 9231012266 No. de Clasificación Universal Decimal: 373.58: 37.014. 13 =20REN No.14.