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2. Das DDR Futterbewertungssystem;Beyer,1971
3. Personal communication;Brugger,1977
4. Devendra, C. 1976. Goat and sheep production systems in the tropic and sub-tropic regions. Paper presented Winrock Int’l. Livestock Res. Training Center, Morrilton, AR.
5. Goat production in the tropics;Devendra,1970