J. W. CourterDepartment of Horticulture, University of Illinois, Champaign-Urbana, IL 61801
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C. M. Sabota
C. M. SabotaDepartment of Horticulture, University of Illinois, Champaign-Urbana, IL 61801
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J. C. O. Nyankori
J. C. O. NyankoriDepartment of Agricultural Economics, Clemson University, Clemson, SC 29631
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Contributor Notes
Received for publication December 18, 1979.
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.