Publication Date: 1931
Seller: Xerxes Fine and Rare Books and Documents, Glen Head, NY, U.S.A.
First Edition
Condition: VG. NY 1931 first edition. October issue of Bell System Technical Journal. Original blue printed octavo wraps. Gillett article pp. 577-600 with 8 photo illus of early broadcasting equipment: speakers, oscillator amplifiers, receivers. VG , no ownership marks.