TY  - BOOK
AU  - Sandhouse,Grace Adelbert
TI  - ... The North American bees of the genus Osmia (Hymenoptera:  Apoidea)
T2  - Memoirs of the Entomological society of Washington.  No
AV  - QL461 .E58 no. 1
PY  - 1939///
CY  - Washington, D.C.
PB  - The Entomological society of Washington
KW  - Bees
KW  - North America
N1  - Descriptive letterpress on versos of plates
ER  -