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- [5] EARLY-PREGNANCY DIAGNOSIS IN THE EWE, BASED ON MILK PROGESTERONE LEVELS JOURNAL OF REPRODUCTION AND FERTILITY, 1979, 56 (01): : 301 - 304
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- [8] MILK PROGESTERONE LEVELS IN COWS WITH NORMAL OR PROLONGED ESTROUS CYCLES, REFERENCED TO AN EARLY-PREGNANCY DIAGNOSIS JAPANESE JOURNAL OF VETERINARY SCIENCE, 1983, 45 (04): : 495 - 499
- [9] EARLY DIAGNOSIS OF PREGNANCY IN COWS BY PROGESTERONE CONCENTRATION IN MILK ILLINOIS RESEARCH, 1977, 19 (01): : 10 - 11