Observation on Reproduction Efficiency Dairy Cattle - Calving Interval, Gestation Poriod, The Interval between Parturition and First Breeding, The Duration from Delivery to Conception - (유우의 번식능률에 관한 연구 -분만간격, 임신시간, 첫 수정일수, 공태일수-)
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- Journal of the korean veterinary medical association
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- v.21 no.3
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- pp.164-169
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- 1985