000 00290nam a2200109 4500
082 _a604.6 ENV
245 _aEnvironmental Engineering Research in Wate Management And new Technology
260 _aPakisthan,Lahore
_bUnesco
_c1979
300 _a35
650 _aEnvironment
_a1979
942 _cSEMNR
999 _c3413
_d3413