Murphy Earl Finbar <br/><br/>
Water purity 

 -  1961 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>72999 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water supply
<br/><br/><label>Dewey Class. No.: </label>D85:(Z), K1