Berlin, Springer, 1920. 8vo. Bound in contemporary half cloth with gilt lettering to spine. In "Zeitschrift für Physik", Bd. 3, 1920. Entire volume offered. Library stamp to front free end paper and title page, light wear to extremities. Pp. 460-465. [Entire volume: IV, 476 pp.].
First printing of Kratzer's important paper in which he first presented the discovery of isotopes of chlorine.
Order-nr.: 49499