H. A. Turner, Mc Innis, M., Angell, R. F., and Weber, D. W.,
“Factors Associated with Dystocia in Beef Heifers”,
The Professional Animal Scientist, vol. 8, no. 3, pp. 43 - 47, 1992.
D. C. Ganskopp, Angell, R. F., and Rose, J.,
“Response of Cattle to Cured Reproductive Stems in a Caespitose Grass”,
Journal of Range Management, vol. 45, no. 4, p. 401, 1992.