Ricklefs, Robert E.. Ecology / Robert E. Ricklefs, Gary L. Miller - 4th. ed. - New York, N.Y. : Freeman , 1999 - xxxvii, 822 p. : il. ISBN: 071672829X 9780716728290 Subjects--Topical Terms: ECOLOGIA ECOSISTEMA ECOLOGIA HUMANA MEDIO AMBIENTE Universal Decimal Class. No.: 574 R539e4