@book{6859,
	author = {VILLANUEVA ESPINOSA, EDGAR LUIS. and INSTITUTO TECNOLOGICO DE TUXTLA GUTIERREZ.},
	title = {EDUCACION AMBIENTAL/ },
	publisher = {EL AUTOR},
	year = {1999},
	address = {TUXTLA GTZ., CHIS.: },
	note = {BIBLIOGRAFIA: P. 69-73.}
}