R. F. Miller, Haferkamp, M. Roy, and Angell, R. F.,
“Clipping Date Effects on Soil Water and Regrowth in Crested Wheatgrass”,
Journal of Range Management, vol. 43, no. 3, p. 253, 1990.
M. Roy Haferkamp, Ganskopp, D. C., Marietta, K. L., and Knapp, B. W.,
“Environmental Influences on Germination of Utricles and Seedling Establishment of 'Immigrant' Forage Kochia”,
Journal of Range Management, vol. 43, no. 6, p. 518, 1990.
D. E. Wilkins, Haferkamp, M. Roy, and Ganskopp, D. C.,
“Power Requirements of an Imprinter and Rangeland Drill”,
Journal of Range Management, vol. 43, no. 3, p. 274, 1990.
R. F. Angell, Miller, R. F., and Haferkamp, M. Roy,
“Variability of Crude Protein in Crested Wheatgrass at Defined Stages of Phenology”,
Journal of Range Management, vol. 43, no. 3, p. 186, 1990.