000 00282nam a2200109Ia 4500
008 210324s1997 xx 000 0 und d
041 _aeng
082 _a574.5
100 _aSharma, P. D.
_91593477
245 _aEcology & Environment
260 _aMeerut
_bRastogi Publications
_c1997
999 _c1042121
_d1042121