Resultados de búsqueda: a new mechanical phonograph de harrison henry c

In: The Scientific Monthly, Vol. XXII, January to June, 1926. New York:: Science Press, 1926., 1926. 8vo. Pages 264-271. [Entire volume: 568 pp.] 7 figs. Dark green cloth, gilt spine. Ex library blind-stamp of the Carnegie Institution of Washington, Mount Wilson Observatory. Fine. FIRST EDITION. Henry Harrison was a member of the technical staff of the Bell Telephone Laboratories.