Wade, M. J., and N. A. Johnson. 1994. Reproductive isolation between two species of flour beetles, Tribolium castaneum and Tribolium freemani: variation within and among geographical populations of T castaneum. Heredity 72:155-162.
Wade, M. J., and N. A. Johnson. 1994. Reproductive isolation between two species of flour beetles, Tribolium castaneum and Tribolium freemani: variation within and among geographical populations of T castaneum. Heredity 72:155-162.