Ting, William  S. <br/><br/>
Determination of pinus species by pollen statistics. Vol.58 

 - Berkely  University of California Press  1966 
 - vii,182p.  26cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clypeastroida
<br/><br/><label>LC Class. No.: </label>QE1.C15 Vol.58