by William Hurford Lawrence
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The Erysiphaceae of Washington
Anthracnose of the blackberry and raspbe...
The apple scab in western Washington
Blackspot canker
Bluestem of the black raspberry
Chou Moellier or marrow cabbage
Apple scab
Scab disease of apples ..
Incidence and development of apple scab ...
Scab-immune apple varieties for new orch...
Apple scab (Venturia inaequalis) and pea...