Allard, R. W. (1960). Principles of Plant Breeding. New York: Wiley.
Brewbaker, J. L. (1964). Agricultural Genetics. Englewood Cliffs N.J.: Prentice Hall.
Christiansen, F. B. & Frydenberg, O. (1976). Selection component analysis of natural polymorphisms using mother-offspring samples of successive cohorts. Population Genetics and Ecology (ed. Karlin, S. and Nevo, E.), pp. 277–301. New York: Academic Press.
Christiansen, F. B. & Fenchel, T. M. (eds.). (1977). Selection in Natural Populations. Berlin: Springer-Verlag.
Clegg, M. T. & Allard, R. W. (1973). Viability versus fecundity selection in the slender white oat Avena barbata L. Science 181, 667–668.
Clegg, M. T., Kahler, A. L. & Allard, R. W. (1978). Simulation of life cycle components of selection in an experimental plant population. Genetics 89, 765–792.
Dorman, K. W. (1976). The Genetics and Breeding of Southern Pines. United States Department of Agriculture, Forest Service Handbook no. 471.
Eanes, W. F., Gaffney, P. M., Koehn, P. M. & Simon, C. M. (1977). A study of sexual selection in natural populations of the milkweed beetle Tetraopes tetraophthalmus in Selection in Natural Populations (ed. Christiansen, F. B. and Fenchel, T. M.), pp. 49–64. Berlin: Springer-Verlag.
Harper, J. L. (1977). Biology of Plant Populations. New York: Academic Press.
Mitton, J. B., Linhart, Y. B., Hamrick, J. L. & Beckman, J. S. (1977). Observations on the genetic structure and mating systems of ponderosa pine in the Colorado Front Range. Theoretical and Applied Genetics 51, 5–13.
Mitton, J. B., Linhart, Y. B., Sturgeon, K. B. & Hamrick, J. L. (1979). Allozyme polymorphisms detected in mature needle tissue of ponderosa pine. Journal of Heredity (In the Press.)
Schaal, B. A. & Levin, D. A. (1976). The demographic genetics of Liatris cylindracea Michx. American Naturalist 110, 191–206.
Schubert, G. H. (1974). Silviculture of Ponderosa Pine in the Southwest. United States Department of Agriculture, Forest Service Research Paper no. RM-123.
Stern, K. & Roche, L. (1974). Genetics of Forest Ecosystems. Berlin: Springer-Verlag.
Wolgast, L. J. (1978). Effects of site quality and genetics on bear oak mast production. American Journal of Botany 65, 487–489.
Workman, P. L. & Niswander, J. D. (1970). Population studies on southwestern Indian tribes. II. Local differentiation in the Papago. American Journal of Human Genetics 22, 24–48.