@book{9570,
	author = {Caldwell, Lynton Keith. and Gisbert da Cruz, F. Xavier.},
	title = {Ecología },
	publisher = {McGraw-Hill, },
	year = {D.L. 1993.},
	series = {Serie McGraw-Hill de divulgación científica},
	address = {Madrid [etc.] : },
	note = {Bibliogr.: p. 225-244.}
}