Faegri, Knut <br/><br/>
Textbook of pollen analysis  

 - 4th ed. 
 - New York :  Wiley,  1989. 
 - x, 328 p Ill. : 
<br/><br/><label>ISBN: </label>0471937193 
<br/><br/><label>LC Class. No.: </label>QE993.F31989