Bacteriological examination of water supplies 

 -  1957 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>64339 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering
<br/><br/><label>Dewey Class. No.: </label>D85:(E3:9I21), J7           CS