Etiology and pathogenesis of chalkbrood in the alfalfa leafcutting bee, Megachile rotundata
By: by John Donald Vandenberg.
Published: 1982
Language: eng
Number of pages: 75
Subjects: Bees -- Diseases.
Notes: Typescript (photocopy).

Thesis (Ph. D.)--Oregon State University, 1982.

Bibliography: leaves 50-53.