Faegri, Knut <br/><br/>
The principle of pollination ecology 

 - New York  Pergamon Press  1966 
 - ix, 248p.  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilization of plants
<br/><br/><label>LC Class. No.: </label>QK926.F3