Maliviya, Shobha Palharya, J P Siriah, V K <br/><br/>
Environmental impact of sewage and effluent disposal on the river system 

 - Delhi  Ashish publishing house  1993 
 - vii,179p.; ill 
<br/><br/><label>ISBN: </label>8170245400 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological observation<br/>Environment<br/>PhysiCo chemical parameters<br/>River