Edward J. RyderU.S. Agricultural Research Station, U.S. Department of Agriculture, Science and Education Administration, Agricultural Research, Box 5098, Salinas, CA 93915
Edward J. RyderU.S. Agricultural Research Station, U.S. Department of Agriculture, Science and Education Administration, Agricultural Research, Box 5098, Salinas, CA 93915
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Contributor Notes
Received for publication February 14, 1981.
The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.