R. E. Harris
Research Station, Box 29, Beaverlodge, Alberta T0H 0C0
Agriculture Canada PUBLICATION 1575, 1976, reprinted 1981
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Monague Free
published by Harper-Collins, 1918.
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A. J. MacLean and F. R. Hore
Research Branch, Agriculture Canada
PUBLICATION 868, available from Information Services, Agriculture Canada
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