@book{8718,
	author = {Rickelefs, Robert E. and Klajn, Diana S,},
	title = {Invitacion a la ecología :},
	publisher = {Medica Panamericana,},
	year = {1998.},
	address = {Buenos Aires :},
	edition = {4a ed.},
	note = {Incluye Apendice  Glosario y indice Alfabetico.}
}