Part 2, Authors: B To Bychkov
Citation
Farr, Marion M.; Potter, Margie; Hassall, Albert; Doss, Mildred A.; Carson, Gertrude B. (1938). Part 2, Authors: B To Bychkov. United States Government Printing Office. Available electronically from https : / /hdl .handle .net /1969 .1 /91871.