Chalk brood disease in the leafcutting bee
By: W.P. Stephen and J.M. Undurraga.
Contributors: Undurraga O., Jaime M.
Series: Station bulletin / Agricultural Experiment Station, Oregon State University -- 630.; Station bulletin (Oregon State University. Agricultural Experiment Station) -- 630.
Publisher: Agricultural Experiment Station, Oregon State University
Published: 1978
Place of publication: Corvallis, Ore
Language: eng
Subjects: Alfalfa leafcutter-bee -- Diseases and pests.
Notes: Cover title.

Bibliography: p. [8].