@book{5542,
	author = {Fernandez de Villalobos, Ana Cecilia.},
	title = {Eco eficiencia : },
	publisher = {Editorial Oveja Negra, },
	year = {1992.},
	address = {Santa Fe de Bogota : },
	edition = {Editores A. Brugger y Eduardo Lizano.},
	note = {Apendice : breve biograf�ia de los autores.}
}