000 00289nam a2200121Ia 4500
008 230913s9999 xx 000 0 und d
100 _aSharma, P.D
245 0 _aEcology And Environment
260 _aNEW DELHI
260 _bRASTOGI PUB
260 _c0
650 _aEnvironmental Science
999 _c124220
_d124220