Intraorchard Changes in Distribution of Winterform Pear Psylla (Homoptera: Psyllidae) Associated with Leaf Fall in Pear

Author： HORTON DAVID R. BURTS EVERETT C. UNRUH THOMAS R. KRYSAN JAMES L. COOP LEONARD B. CROFT BRIAN A.

Publisher： Entomological Society of America

ISSN： 1938-2901

Source： Annals of the Entomological Society of America, Vol.86, Iss.5, 1993-09, pp. : 599-608

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