Faegri, Knut <br/><br/>
The principles of pollination ecology/ 
by K. Faegri and L. van der Pijl 
 - 2nd revised ed 
 - Oxford :  Pergamon Press ,  1971 
 - 244p.  ill.  26cm 
 - Pergamon international library of science, technology, engineering, and social studies .
<br/><br/> 2nd. rev. ed. reprinted with revisions, 1980 
<br/><br/><label>ISBN: </label>0080213383 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilization of plants<br/>Botany--Ecology