Browsing Extension & Experiment Station Communications by Author "Vandenberg, J. D. (John Donald)"

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Etiology and epizootiology of chalkbrood in the leafcutting bee, Megachile rotundata (Fabricius), with notes on Ascosphaera species

Oregon State University. Agricultural Experiment Station; Stephen, W. P.; Vandenberg, J. D. (John Donald); Fichter, B. L. (Corvallis, Or. : Agricultural Experiment Station. Oregon State University., 1981-10)
Inhibition of chalkbrood spore germination in vitro (Ascosphaera aggregata: Ascosphaerales)

Oregon State University. Agricultural Experiment Station; Stephen, W. P.; Vandenberg, J. D. (John Donald); Fichter, B. L.; Lahm, G. (Corvallis, Or. : Agricultural Experiment Station. Oregon State University., 1982-01)