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Author(s): <a href='https://dar.bibalex.org/en/Search/ExactResults.aspx?format_Id=1&author=Weston%2C%20William%20H.%20%5Bfrom%20old%20catalog%5D'> Weston, William H. [from old catalog]
Publication Date: 1921.
Contributor(s): <a href='https://dar.bibalex.org/en/Contributor/ContributorItems.aspx?contributor=Biodiversity%20Heritage%20Library&format_id=1'> Biodiversity Heritage Library
Collection(s): <a href='https://dar.bibalex.org/en/Collection/CollectionItems.aspx?collection=Biodiversity%20Heritage%20Library&format_id=1'> Biodiversity Heritage Library
Category: <a href='https://dar.bibalex.org/en/Category/CategoryDetails.aspx?mainCat=Others&format_id=1'> Others

The occurrence of wheat downy mildew in the United States.