@book{7023,
	author = {Yentel, Nora and Martínez Guarino, Ramón},
	title = {Cuando el alumno trabaja y participa},
	publisher = {Humanitas},
	year = {1991},
	address = {Buenos Aires},
	note = {EMETA:Escuela Media Experimental Técnica Agropecuaria}
}