- Author: D. Robertson Smith and William M. Davidson (Eds.)
- Language: English
- Year: 1958
- Author: G. W. A. Dummer and J. Mackenzie Robertson (Eds.)
- Language: English
- Year: 1967
Sheep Breeding
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- Author: G.L Tomes D.E. Robertson and R.J. Lightfoot (Eds.)
- Language: English
- Year: 1979
- Author: Richard T. Robertson (Eds.)
- Language: English
- Year: 1978
- Author: G.W.A. Dummer and J. Mackenzie Robertson (Eds.)
- Language: English
- Year: 1968
- Author: G.W.A. Dummer and J. Mackenzie Robertson (Eds.)
- Language: English
- Year: 1968
- Author: G. W. A. Dummer and J. Mackenzie Robertson (Eds.)
- Language: English
- Year: 1964
- Author: G.W.A. Dummer and J. Mackenzie Robertson (Eds.)
- Language: English
- Year: 1968
- Author: G.W.A. Dummer and J. Mackenzie Robertson (Eds.)
- Language: English
- Year: 1968