TY  - BOOK
AU  - Krebs, Charles J.
TI  -  Ecological methodology
SN  - 0060437847
U1  - 577.0727 
PY  - 1989///
CY  - New York
PB  - Harper Collins
KW  - Ecology
KW  - Statistical methods
N1  - Includes bibliographical references and index
ER  -