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By "Drayton, F. L."
By: Drayton, F. L. - Dominion Experimental Farms and Stations (Canada)
Publication info: Ottawa :Dept. of Agriculture,[1917?]
Contributed by: Canadiana.org (archive.org)
A summary of the prevalence of plant diseases in the Dominion of Canada, 1920-1924.
By: Canada. - Drayton, F. L. - Dominion Experimental Farms.
Publication info: Ottawa :F.A. Acland, Printer to the King's Most Excellent Majesty,1926.
Contributed by: Agriculture and Agri-Food Canada (archive.org)