Prescott, G.W, <br/><br/>
How to Know the fresh - water algae :  an illustrated key for identifying the more common fresh-water algae to genus, with hundreds of species named and picture and with numerous aids for their study / 
G. W. Prescott. 
 - 211 páginas :  ilustraciones. 
 - Picture key nature series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>ALGAS DE AGUA DULCE.<br/>CLAVE DE IDENTIFICACION.
<br/><br/><label>Dewey Class. No.: </label>589.3