Prescott, G. W. <br/><br/>
How to know the freshwater algae 
G. W. Prescott. 
 - 3d ed. 
 - Dubuque, Iowa  W. C. Brown  c1978. 
 - xii 348 p.  ill. 
 - The Pictured key nature series .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 22-24. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater algae--Identification.
<br/><br/><label>LC Class. No.: </label>QK567  / .P7 1978 
<br/><br/><label>Dewey Class. No.: </label>589/.39/29