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Contributor Notes
Received for publication 25 Aug. 1986. Appreciation is expressed to the Near East Foundation for support of this project and to Laura Williams Rice for editing the manuscript. 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.
Lecturer
Visiting Professor, Currently Visiting Professor, Crop Science Dept., Univ. of Zimbabwe, P.O. Box MP167, Mount Pleasant Harare, Zimbabwe.
Abstract
