Spellman, Frank R., <br/><br/>
Safe work practices for wastewater treatment plants / 
Frank R. Spellman and Kathern Welsh. 
 - Third edition. 
 - pages cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9780815368526 (hardback) 
<br/><br/><label>LCCN: </label>2017036407 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage disposal plants--Safety measures.
<br/><br/><label>LC Class. No.: </label>TD746  / .S64 2017 
<br/><br/><label>Dewey Class. No.: </label>628.3028/9