Standard methods for the examination of water and wastewater. 

 - 13th ed. / prepared and published jointly by American Public Health Association, American Water Works Assoc. [and] Water Pollution Control Federation.  13th ed. / prepared and published jointly by American Public Health Association, American Water Works Assoc. [and] Water Pollution Control Federation. 
 - New York :  A.P.H.A.,  [1971] 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water -- Analysis.--Water -- Analysis.<br/>Sewage -- Analysis.--Sewage -- Analysis.