Filtering materials for sewage treatment plants, 
prepared by the Committee of the Sanitary engineering division on filtering materials for water and sewage works. Adopted October 13, 1935. 
 - New York, N.Y.,  Headquarters of the Society,  1937. 
 - 40 p.  diagrs.  23 cm. 
 - Am. Soc. C. E. Manuals of engineering practice. .
<br/><br/> Cover-title. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Filters and filtration.<br/>Sewage--Purification.
<br/><br/><label>Dewey Class. No.: </label>628.352  / FIL