Standard methods for the examination of water and wastewater / 
prepared and published jointly by American Public Health Association, American Water Works Association and Water Environment Federation. 
 - Twenty-first edition. 
 - [various pagings] :  illustrations ;  28 cm 
<br/><br/> "Centennial edition" -- t.p.  Joint editorial board: Andrew D. Eaton ... [et al.].  In the 21st edition new methods have been added in Parts 2000, 4000, 5000, 6000, 7000, 8000 and 9000, and numerous methods have been revised. Details of these changes appear on the reverse of the title page for each part. -- p. iv.  Includes Supplement to the 21st edition (pp. S-1 to S-16) 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>
<br/><br/><label>ISBN: </label>0875530478 9780875530475 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Analysis.<br/>Sewage--Analysis
<br/><br/><label>Dewey Class. No.: </label>628.161