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1987
An effect of copper supplementation on growth of beef cattle in Northland, TC Reid, and PW Shannon , Proceedings of the New Zealand Society of Animal Production, Volume 47, p.123-124, (1987) , (Full PDF)
1980
Intensive wintering of beef steers in Northland, PW Shannon, and C During , Proceedings of the New Zealand Society of Animal Production, Volume 40, p.268-271, (1980) , (Full PDF)