Erdtman G <br/><br/>
Pollen morphology and plant taxonomy 
Erdtman G 
 -  1952 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>50766 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Pollen<br/>Botany
<br/><br/><label>Dewey Class. No.: </label>I,166:2, J2.1