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Contributor Notes
Received for publication 19 May 1986. We sincerely appreciate and thank the following persons for their invaluable assistance in this project: W.R. Povish, Glenn Dale, Md. for all phases of logging in the shipments and carefully handling the budding operations as well as maintaining and virus indexing the trees; M. Kukic, American Embassy, Belgrade, Yugoslavia, for assisting with shipment of budwood; N. Rajkovic and several other chauffeurs for driving; and the numerous directors of experiment stations and state farms as well as the owners of private orchards for assisting in locating indigenous pear varieties in their regions. 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.
