Levine, Louis, 1921- Laboratory exercises in genetics / Louis Levine, Norman M. Schwartz ; experiment 18 by William DeWitt. - 2nd ed. - St. Louis, Mo. : C. V. Mosby, 1973. - viii, 175 p. : ill. ; 27 cm. ISBN: 0801629810 Subjects--Topical Terms: Genetics--Laboratory manuals.