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Shoot blight of red pine [microform] :a survey of the disease in the Maritime Provinces and some aspects of the biology of the causal organism Sirococcus conigenus (DC) P. Cannon and Minter / by Ralph Arnold Simpson.

by Simpson, Ralph Arnold.
Material type: materialTypeLabelBookSeries: Canadian theses on microfiche. Publisher: Hull, Quebec : Micromedia Ltd., 1989Description: 1 microfiche (65 fr.) : ill. ; 11 x 15 cm.ISBN: 0315484306.Subject(s): Trees -- Maritime Provinces | New Brunswick -- TreesDDC classification: 580 Dissertation note: Thesis (M.Sc.)--University of New Brunswick, 1989.

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