John A. WellsUS. Department of Agriculture, Science and Education Administration, Agricultural Research, U.S. Vegetable Laboratory, Charleston, SC 29407
Search for other papers by John A. Wells in Google ScholarClose
John A. WellsUS. Department of Agriculture, Science and Education Administration, Agricultural Research, U.S. Vegetable Laboratory, Charleston, SC 29407
Search for other papers by John A. Wells in Google ScholarClose
Contributor Notes
Received for publication December 20, 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.