Gallego, Domingo J. Canton Mayo, Isabel Alonso, Catalina M. text sp Barcelona Oidos-tau 1996 monographic spa 484 p. ill. 24 cm. Domingo J. Gallego, Catalina M. Alonso, Isabel Canton Mayo, coordinadores. Bibliography: p.484. Educational technology Teaching Aids and devices LB1028.3 .I574 1996 8428108676 970130 20190205145601.0 208394