1. Factors Affecting the Milk Production of Simmenthaler Grade Cows under the Penkeeping System;Carneiro;Iowa State College J. Sci.,1939
2. Variations in Yield of Milk under the Penkeeping System in Brazil;Carneiro;J. Dairy Sci.,1948
3. O Gado Caracu sob o sistema de retiros;Dias;Escola Sup. Agr., Vicosa, M. G., Brazil. Ceres,1948
4. Breeding for Milk Production in the Tropics;Edwards;J. Dairy Research,1932
5. The Effects of Varying Amounts of Zebu Blood on the Adaptability of Dairy Cattle to Conditions in Jamaica;Howe;Trop. Agr.,1949