000			00415nam a2200145Ia 4500
008			150317s9999 xx 000 0 und d
020			_a8122405258
080			_a551.5:63VAR-T
245			_aEnvironment challenges
260			_c1993 _aNew Delhi _bWiley Eastern publishers
300			_axii, 131 p.
650			_aENVIRONMENTENVIRONMENTAL ENGINEERING
700			_aVarshney, K. C. Sardesai, D. R.
942			_2udc _cBK
999			_c8326 _d8326