Roubik, David W.,    1951,  <br/><br/>
Ecology and natural history of tropical bees.   

 - Cambridge :   Cambridge University Press,   1989. 
 - ix, 514 p. :    ill. ;    23 cm. 
 - Cambridge Tropical Biology series.   .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bees ----Tropics.----<br/>Ecology ----Tropics.----
<br/><br/><label>Dewey Class. No.: </label>595.799 ROU