M. H. ChaplinDepartment of Horticulture, Oregon State University, Corvallis, OR 97331
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A. R. Dixon
A. R. DixonDepartment of Horticulture, Oregon State University, Corvallis, OR 97331
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Contributor Notes
Received for publication February 1, 1979. Oregon Agricultural Experiment Station Technical Paper 5071.
The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper must therefore be hereby marked advertisement solely to indicate this fact.