00554nam a2200205 a 450000500170000000800410001702000150005804100080007308200080008110000180008924500450010725000120015226400420016430000290020650000510023565000120028665000160029865000140031465000200032820260717091418.0260717s1990    ii            000 0 eng d  a8171331831  aeng04a5771 aSharma, P. D.10aEcology and environment /cSharma, P. D.  a6th ed. 1aMeerut :bRastogi publication,c1990.  axv, 519p. : ill ; 22 cm.  aIncludes bibliographical references and index. 4aEcology 4aEnvironment 4aEcosystem 4aHabitat Ecology