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1963
Availability of selenium in forage to ruminants, GW Butler, and PJ Peterson , Proceedings of the New Zealand Society of Animal Production, Volume 23, p.13-19, (1963) , (Full PDF)
1961
The use of isotopes in animal and plant research, GW Butler , Proceedings of the New Zealand Society of Animal Production, Volume 21, p.130-143, (1961) , (Full PDF)
1959
The chemical composition of rapidly growing ryegrass and its relation to animal production, GW Butler , Proceedings of the New Zealand Society of Animal Production, Volume 19, p.99-110, (1959) , (Full PDF)