Programed genetics [by] Chester A. Lawson [and] Mary Alice Burmester. Lawson, Chester A. (Chester Alvin), 1908- Burmester, Mary Alice, 1909- joint author. Genetics Programmed instruction. QH431 .L35 575.1 LAP Boston, Heath [1963-1966] [1963-1966] 1963 Text 3 v. eng