Eakin, 1968
Eakin, R. M., 1968, 'Evolution of photoreceptors', in T. Dobzhansky, Evolutionary Biology, M. K. Hecht and. W. C. Steere, eds, Vol. 2, New York: Appleton-Century-Crofts
Eakin, R. M., 1968, 'Evolution of photoreceptors', in T. Dobzhansky, Evolutionary Biology, M. K. Hecht and. W. C. Steere, eds, Vol. 2, New York: Appleton-Century-Crofts