BLACK, A P <br/><br/>
The chemistry of water treatment; determination of pH values.  [electronic resource] 

 -  Water & sewage works  Apr 1949 
 - 133-5 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0043-1125 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water Purification<br/>Water Supply