The utilisation of maize-crop residues for overwintering livestock 3. Livestock performance as affected by different cattle to sheep ratios when grazing maize-crop residues von Collyer, J.A., Gertenbach, W.D., Viljoen, J., Van H. Henning, P.W.

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Pulsatile varicose veins von Barnett, N, Collyer, T C, Weston, M, Spark, J I, Scott, D J A

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STERILISATION OF THE UNFIT von Blacker, C.P., Fisher, R.A., Gibbons, R.A., Langdon-Down, R., Ryle, J.A., Collyer, C.

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