... The North American bees of the genus Osmia (Hymenoptera: Apoidea)
Sandhouse, Grace Adelbert.
The North American bees of the genus Osmia (Hymenoptera: Apoidea) by Grace A. Sandhouse. - Washington, D.C., The Entomological society of Washington, 1939. - 2 p. l., 167 p. 11 pl. 26 cm. - Memoirs of the Entomological society of Washington. No. .
Descriptive letterpress on versos of plates.
agr41000404
Bees--North America.
QL461 / .E58 no. 1
The North American bees of the genus Osmia (Hymenoptera: Apoidea) by Grace A. Sandhouse. - Washington, D.C., The Entomological society of Washington, 1939. - 2 p. l., 167 p. 11 pl. 26 cm. - Memoirs of the Entomological society of Washington. No. .
Descriptive letterpress on versos of plates.
agr41000404
Bees--North America.
QL461 / .E58 no. 1