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Evolution of domesticated animals by I.L. Mason A World Dictionary of Livestock Breeds, Types and Varieties by I. L. Mason Prolific tropical sheep by I.L. Mason Calving Problems and Early Viability of the Calf by I.L. Mason Sheep Breeds of the Mediterranean by I.L. Mason Breeding Plans for Ruminant Livestock in the Tropics by I.L. Mason The classification of West African livestock. by I.L. Mason A World Dictionary of Breeds, Types and Varieties of Livestock by I.L. Mason Hammond's farm animals by John Hammond Origin of the Domestic Animals of Africa. Volume II by Helmut Epstein


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