Hymenoptera and biodiversity 

 - London  C.a.b. international  1993 
<br/><br/><label>ISBN: </label>0 85198830 X 
<br/><br/><label>LC Class. No.: </label>532.79/HYM 
<br/><br/><label>Dewey Class. No.: </label>532.79/HYM