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  1. Annual forage crops for the southern interior of British Columbia /
    By: Hubbard, William A. - Waldern, D. E., - Canada.
    Edition: Rev.
    Publication info: Ottawa :Information Division, Canada Dept. of Agriculture,1976.
    Contributed by: Agriculture and Agri-Food Canada (archive.org)
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  2. Minéraux et vitamines pour le bétail laitier /
    By: Fisher, L. J. - Waldern, D. E., - Canada.
    Edition: Rev.
    Publication info: Ottawa :Agriculture Canada,c1979.
    Contributed by: Agriculture and Agri-Food Canada (archive.org)
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