@book{4743,
	author = {Balthazar, Earl E},
	title = {Aprendizajes basicos: manual para padres y educadores/ Earl E. Balthazar},
	publisher = {Servicio Internacional de Informacion sobre Subnormales,},
	year = {1978},
	address = {San Sebastian:},
	note = {Inv. 2018}
}