Welker, Joseph <br/><br/>
Water and wastewater treatment/ 
Welker, Joseph 
 - New York, USA;  Callisto Refeence,  c2020. 
 - vii;  212 pages 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781641163804 (Paperback) 
<br/><br/><label>Subjects--Personal Names: </label><br/>Welker, Joseph
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Purification<br/>Sewage--Purification<br/>Water treatment plants--Management<br/>Sewage disposal plants<br/>Sanitary engineering
<br/><br/><label>Dewey Class. No.: </label>628.16