Muenscher, Walter Conrad Leopold,  1891-1963 <br/><br/>
Aquatic plants of the United States / 
by Walter Conrad Muenscher 
 - Ithaca, N.Y. :  Cornell University Press,  1944 
 - x, 374 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater flora--United States