000 00292nam a2200121Ia 4500
100 _aParavathy Ramanan
020 _a81-224-1130-4
942 _cBK
245 _aSociety enviornment and engineering
260 _aNew Age International, New Delhi
_c1998
082 _a301.3 Ram
300 _a181p
999 _c33932
_d33932