Safety, health, and security in wastewater systems / 
prepared by the Safety, Health, and Security in Wastewater Systems Task Force of the Water Environment Federation 
 - 6th ed. 
 - New York :  McGraw-Hill,  c2013 
 - xxxiii, 437 p. :  ill. ;  25 cm. 
 - WEF manual of practice ;  no. 1 .
 - WEF manual of practice ;  no. 1 .
<br/><br/><label>ISBN: </label>9780071780933 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification--Safety regulations