Water plants of the world :  a manual for the identification of the genera of freshwater macrophytes / 
by Christopher D. K. Cook ... [et al.] 
 - The Hague :  Junk,  1974 
 - viii, 561 p. :  ill. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/>Bibliography: p. 4-5 
<br/><br/><label>ISBN: </label>9061930243 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Phytogeography<br/>Freshwater plants--Identification
<br/><br/><label>Dewey Class. No.: </label>581.929