00298nam a2200109 a 450000500170000008200130001710000230003024500690005325000120012226000330013430000210016720251203090505.0  a577bKRE  aKrebs, Charles, J.  aEcology: the experimental analysis of distribution and abundance  a3rd ed.  aNew YorkbHarper & Rowc1985  axv, 800p, 23 cm.