Proceedings 

 - Praga :  International Commission for Bee Botany,  1975 
 - 331 p.  : ilus. ; gráfs 
<br/><br/><label>LCCN: </label>26221 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Abejas.<br/>Polinización.
<br/><br/><label>Dewey Class. No.: </label>581.1662  / I5 1974