London: Oxford University Press, 1947. Hardcover. Small 4to. Black cloth with gilt spine lettering. xiii, 208pp. Frontispiece, numerous figures and mathematical equations. Very good. Mild edgewear and spine ever-so-lightly sunned; faint floral mustiness. Item #47020
A tight, nice first edition. Front flyleaf and rear pastedown each bear purple name/address inkstamp of Georges A. Deschamps (1911-98), noted University of Illinois professor of electrical engineering who made significant radiation discoveries about Gaussian beams.