Proceeding of the 30th Industrial Waste Conference, May 6, 7, and 8, 1975, Purdue University, Lafayette, Indiana 

 - Ann Arbor, Mich. :  Ann Arbor Science,  1977 
 - 1311 p. :  ill. ;  24 cm. 
<br/><br/> The Purdue Industrial Waste Conference is under the direction of: the School of Civil Engineering, the Division of Conference and Continaution Services, in cooperation with Indiana Department of Environmental Management ... et al. 
<br/><br/><label>ISBN: </label>0250401630 
<br/><br/><label>LCCN: </label>77-70293 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Factory and trade waste--Congresses<br/>Sewage--Purification--Congresses