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1963
Systems of pig production in Canterbury: An economic appraisal, A Longwill , Proceedings of the New Zealand Society of Animal Production, Volume 23, p.144-158, (1963) , (Full PDF)
1951
A Plan of Pig Improvement Applicable to N.Z. Conditions, A Longwill , Proceedings of the New Zealand Society of Animal Production, Volume 11, p.48-56, (1951) , (Full PDF)