RT Journal Article SR Electronic T1 FREQUENCY OF SPONTANEOUS MUTATIONS IN CERTAIN STOCKS OF DROSOPHILA MELANOGASTER JF Genetics JO Genetics FD Genetics Society of America SP 469 OP 478 VO 22 IS 5 A1 Demerec, M. YR 1937 UL http://www.genetics.org/content/22/5/469.abstract AB