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  1. Common and scientific names of weeds in Canada = Noms populaires et scientifiques des plantes nuisibles du Canada /
    By: Darbyshire, S. J.
    Publication info: Ottawa :Agriculture and Agri-Food Canada = Agriculture et agroalimentaire Canada,c2000.
    Contributed by: Agriculture and Agri-Food Canada (archive.org)
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  2. Fescue grasses of Canada /
    By: Aiken, S. G. - Darbyshire, S. J. - Canada.
    Publication info: Ottawa :Agriculture Canada,1990.
    Contributed by: Agriculture and Agri-Food Canada (archive.org)
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