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- [50] SYNCHRONIZATION OF ESTRUS IN SUCKLED BEEF-COWS WITH MELENGESTROL ACETATE, 48-HOUR CALF REMOVAL AND PROSTAGLANDIN-F2-ALPHA PROCEEDINGS - WESTERN SECTION, AMERICAN SOCIETY OF ANIMAL SCIENCE AND WESTERN BRANCH, CANADIAN SOCIETY OF ANIMAL SCIENCE, VOL 40, 1989, 40 : 341 - 343