by Woolford, M.W, Williamson, J.H, Copeman, P.J.A, Napper, A.R, Phillips, D.S.M
Published in Proceedings - Ruakura Farmers' Conference (1983)

by Woolford, M, Williamson, J.H, Copeman, P.J.A, Napper, A.R, Phillips, D.S.M, Uljee, E
Published in New Zealand Journal of Agriculture (New Zealand) (1983)

by Copeman, P.J.A, Napper, A.R. (Ruakura Anim. Res. Sta., Private Bag, Hamilton (New Zealand))
Published in Occasional Publication, New Zealand Society of Animal Production (New Zealand) (1982)