New mutants report /
Sobels, F. H.
New mutants report / F. H. Sobels ... [et al.] - [S.l. : s,n.], 1951 - 2 p. ; 31 cm - Drosophila information service ; n. 25 .
New mutants report / F. H. Sobels ... [et al.] - [S.l. : s,n.], 1951 - 2 p. ; 31 cm - Drosophila information service ; n. 25 .