00395nam a2200133 a 450000500170000000800410001702000180005804100080007610000200008424500710010425000120017526400510018730000230023820260717092736.0260717s2010    ii            000 0 eng d  a9788120338944  aeng1 a`Rana, S. V. S.10aEssentials Of Ecology And Environmental Science /c`Rana, S. V. S.  a4th ed. 1aNew Delhi :bPHI Learning Private Ltd,cC2010.  axv, 568p. ; 24 cm.