@book{9697,
	author = {Marcieca, Eduardo and Loayza, Maggie},
	title = {Instrumentos de Trabajo Educativo /},
	publisher = {Indo- American Press Service},
	year = {1981.},
	series = {Colección Pedagógica Grupal  },
	address = {Bogotá :},
	edition = {3a ed.}
}