Whipple, G.C. <br/><br/>
Microscopy of drinking water  With a chapter on "the use of the microscope" 
by G.C. Whipple, J.W.M. Bunker. 
 - 3rd edition 
 - New York  Wiley  1914 
<br/><br/><label>Dewey Class. No.: </label>613.31  / N14