Nesting media for the propagation of leaf cutter bees
By: prepared by W.P. Stephen, R.W. Every.
Series: FS / Oregon State University. Extension Service -- 175.; Fact sheet (Oregon State University. Extension Service) -- 175.
Publisher: Oregon State University, Cooperative Extension
Published: 1970
Place of publication: [Corvallis?]
Language: eng
Subjects: Alfalfa leafcutting bee -- Nests.
Notes: Integrated Pest Management/Pesticide Applicator Training Collection.

Cover title.

"May 1970."