R. B. Simpson

Simpson, R. B., Wesen, D. P., Anderson, K. L., Armstrong, J. D., & Harvey, R. W. (1995). Subclinical mastitis and milk production in primiparous Simmental cows. Journal of Animal Science, 73(6), 1552. https://doi.org/10.2527/1995.7361552x

SIMPSON, R. B., ARMSTRONG, J. D., & HARVEY, R. W. (1992). EFFECT OF PREPARTUM ADMINISTRATION OF GROWTH HORMONE-RELEASING FACTOR ON SOMATOTROPIN, INSULIN-LIKE GROWTH FACTOR-I, MILK-PRODUCTION, AND POSTPARTUM RETURN TO OVARIAN ACTIVITY IN PRIMIPAROUS BEEF HEIFERS. JOURNAL OF ANIMAL SCIENCE, 70(5), 1478–1487. https://doi.org/10.2527/1992.7051478x

SIMPSON, R. B., ARMSTRONG, J. D., HARVEY, R. W., MILLER, D. C., HEIMER, E. P., & CAMPBELL, R. M. (1991). EFFECT OF ACTIVE IMMUNIZATION AGAINST GROWTH HORMONE-RELEASING FACTOR ON GROWTH AND ONSET OF PUBERTY IN BEEF HEIFERS. JOURNAL OF ANIMAL SCIENCE, 69(12), 4914–4924. https://doi.org/10.2527/1991.69124914x