@book{445,
	author = {Foster, Phillips W. and Hermanson Roger H.},
	title = {Introducción a la ciencia ambiental /},
	publisher = {El Ateneo,},
	year = {1977.},
	series = {Enseñanza Programada El Ateneo},
	address = {Buenos Aires :},
	edition = {2a. ed}
}