Kofoid, C.A. <br/><br/>
The Plankton of the Illinois river 1894-1899  C.A. Kofoid. 

 - Vaduz  A.R. Grantner Verlag Kommanditgeselschaft  1977 
 - various pagination, 22cm 
 - (Bribliothecu phycologica v.29). .
<br/><br/><label>ISBN: </label>3-7682-1104-5. 
<br/><br/><label>Dewey Class. No.: </label>581.9,  / K92P