Bologna, Nicola Zanichelli, 1913. 8vo. In the original printed wrappers (With both the regular journal issue wrappers and the offprint wrappers - as issued). Offprint from "Scientia", Band XIII, Jahr 7. (1913), N.XXVII-1. A very fine and clean copy. Pp. 1-(25) - 20-(44).
Offprint issue of Smoluchowski's paper on the number and size of mulecules and atoms.
Order-nr.: 48719