title: Evolutionary Studies on the Distribution and Dynamics of Melanism in the Hamster (Cricetus Cricetus L.). II. Seasonal and Annual Changes in the Frequency of Black Hamsters.
authors.affiliation: Dept. of Darwinism, Kiev State University, and Dept. of Genetics, Zoological Institute of the Academy of Sciences of the Ukrainian S.S.R.
authors.forename: S
authors.initials: S
authors.lastname: Gershenson