000 00292nam a2200109Ia 4500
008 220303s1997 xx 000 0 und d
041 _aeng
082 _a574.5 SHA / ECO
100 _aSharma, P. D.
_9100467
245 _aEcology and Environment
260 _aMeerut
_bRastogi Publications
_c1997
999 _c108733
_d108733