The evolution of genetic systems, by C.D. Darlington ... Genetic systems, The evolution of. Darlington, C. D. (Cyril Dean), 1903- Heredity. Variation (Biology) QH431 .D212 575.1 DAE Bibliography: p. [135]-138. Cambridge [Eng.] The University Press, 1939. 1939. 1939 Text x p., 1 l., 149 p. eng Cambridge biological studies