TY  - BOOK
AU  - Stephen, W. P.
AU  - Bohart, G. E.
AU  - Torchio, P. F.
TI  - The biology and external morphology of bees: : with a synopsis of the genera of Northwestern America
U1  - 595.799 
PY  - 1969///
CY  - Corvallis, Ore.
PB  - Agricultural Experimental Station
KW  - Abejas
KW  - Anatomía y fisiología
ER  -