Biblio
“The Carotene and Vitamin A Content of Plasma and Liver of Range Hereford Cows and Their Calves in the Northern Great Basin”, Journal of Animal Science, vol. 16, no. 2, pp. 525 - 536, 1957.
, “The effect of carotene intake by Hereford cows on calf growth”. Oregon Agricultural Experiment Station, 1956.
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