Willemstein, S.C. <br/><br/>
An evolutionary basis for pollination ecology. 

 - Leiden   Leiden University Press    1987 
 - viii, 425 p. 
 - Leiden Botanical series  Vol. X .
<br/><br/><label>ISBN: </label>90-04-08457-6. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Botany--Ecology<br/> Insects--Ecology<br/> Insects--Food<br/> Plants--Evolution<br/> Pollination<br/>Insects--Evolution<br/>Zoology
<br/><br/><label>LC Class. No.: </label>QL468.7.W55