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Title: Studies on factors affecting the pest status of psylla pyricola forster in pear orchards in kent, England/ by Tawfiq Mohammad Mustafa ; supervised by C. H . Hodgson.
Author: Mustafa, Tawfiq Mohammad.
superviso C. H . Hodgson.

General Notes: Stencil., Stencil.
Subject: Psylla puricola.
Pear -- Diseases a pests.

Dissertation Note: Thesis (Ph. D.) University of London, 1982.
Physical Description: 324 Leaves Illustration.
Publication Date: 1982.

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  Agency: Collection: Call No.: Item Type: Status: Copy: Barcode: Media Type:
Theses & Disertations Thesis 634.139 M991 No Circulation Available 1 JUF0234199 Thesis