Erdtman, Gunnar. <br/><br/>
Pollen morphology and plant taxonomy ; angiosperms (An introduction to palynology I) 

 - Waltham :  Chronica Botanica,  1952 
 - 539 p.  : ilus. 
<br/><br/><label>LCCN: </label>41645 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botánica--Clasificación.<br/>Polen.
<br/><br/><label>Dewey Class. No.: </label>581.3325  / E73p