Telephone Circuit Unbalances; Bell Telephone System reprint B-134-I, July 1925.
Bell Telephone System 1925, 35 pages, illustrations, photographs.
Condition: Very Good, light blue heavy paper covers, stapled wraps, three-hole punched at margin, sound and secure, pages clean and unmarked.
Categories: 1950's computers and computing, Computers and Society, Databooks, Handbooks, Manuals, Electronic and Electrical Engineering, Technical Journals, Proceedings, Conferences, Bell System Technical Journals, BSTJ pre-1940
See all items by L. P. Ferris, R McCurdy