Berlin, Julius Springer, 1917. Uncut in orig. printed wrappers. Small nick to lower part of back. Names on frontwrapper. X,(2),206 pp.
First edition. - Neyman considered this work as the author's most importent.
Berlin, Julius Springer, 1913. Orig. printed wrappers. Names on frontwrapper. (8),84 pp.
First edition. In this work he considers the question of radioactive radiation, and shows that its distribution follows probabilistic laws.