1. Allison , A. J. Proceedings of the N.Z. Society of Animal Production . Vol. 28 , pp. 115 – 115 .
2. Breirem , K. , Ekern , A. and Homb , T. Proceedings Federation American Society Experimental Biology, Supplement 7 . Vol. 20 , pp. 275 – 275 .
3. Cockrem , F. Proceedings of the N.Z. Society of Animal Production . Vol. 25 , pp. 164 – 164 .
4. Liveweight-productivity relationships in sheep