Krebs, Charles J. Ecological methodology / by Charles J. Krebs. - 2nd ed. - Menlo Park, Calif. : Benjamin/Cummings, 1999. - xii, 620 p. : ill. ; 24 cm. ISBN: 9780321021731 Subjects--Topical Terms: Ecology --Statistical methods. Dewey Class. No.: 577.0727 KRE 'R'