Upper Stem Canker
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Author(s): Philip B. Hamm, Sally J. Campbell, Everett M. Hansen
Publication: Forest Nursery Pests (1989) - Conifer and Hardwood Diseases
Author(s): Philip B. Hamm, Sally J. Campbell, Everett M. Hansen
Publication: Forest Nursery Pests (1989) - Conifer and Hardwood Diseases