Perscott G W <br/><br/>
How to know the freshwater algae 

 - 3 
 - Dubuque  Wm C Brown         1978 
 - x,293p.  cm. 
<br/><br/> Appendix 260-280p 
<br/><br/><label>Standard No.: </label>50518 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Algae<br/>Botany
<br/><br/><label>Dewey Class. No.: </label>I22:5.1951, J4;L8