Ecology : the experimental analysis of distribution and abundance / Charles J. Krebs. Krebs, Charles J. Ecology Methodology. Population biology Methodology. Biogeography Methodology. QH541 .K67 1978 574.5 KRE Includes indexes. Bibliography: p. 630-665. New York : Harper & Row, c1978. c1978. 1978 Text xxv, 678 p. : eng