Spellman, Frank R. <br/><br/>
Safe work practices for wastewater treatment plants / 
Frank R. Spellman 
 - 2nd ed. 
 - Lancaster :  Technomic Publishing,  2001 
 - xiii, 258 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>1587160005  241.00 
<br/><br/><label>LCCN: </label>00-109215 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage disposal plants--Safety measures