00553nam a2200181   450000500170000000600040001700700040002100800040002502000180002902000150004704000090006205000220007110000160009324501270010926000730023630000150030965000470032420170928143522.0000000000  a9788122422375  a8122422373  aUOEL  aTD178.8bG38 2008  aGaur, R. C.  aEnvironmental engineering laboratory manual :bfor first year engineering students (common to all branches)cby R. C. Gaur  aNew Delhi :bNew Age International (P), Limited, Publishers,cc2008.  avii, 49 p.  aEngineering environmentvLaboratory manual