||Discriminatory Effect of Ultraviolet Rays on Mutation in Drosophila
||Muller, H.J. and Mackenzie, K.
||Nature, Vol. 143, p. 83, January 14
|| Very good condition. First edition. Offprint. Original wrappers.* Emil Hietz copy with his ownership signature front page. Some marginalia and underlining. Ink splotch front page. Genetics. Science.