000 00305nam a2200109Ia 4500
008 220303s1997 xx 000 0 und d
041 _aeng
082 _a574.5 TRI / TEX
100 _aTrivedi, R.N.
_9104336
245 _aTextbook of Environmental Sciences
260 _aNew Delhi
_bAnmol Publications
_c1997
999 _c112621
_d112621