Jolley, E. H.
Introduction to telephony and telegraphy - 1st ed. - New York Hart Publishing 1968 - x, 413p. illus.
Telephony : Engineering
623.85 / JOL/1968
Introduction to telephony and telegraphy - 1st ed. - New York Hart Publishing 1968 - x, 413p. illus.
Telephony : Engineering
623.85 / JOL/1968