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1. The Bell System technical journal

by -- American Telephone and Telegraph Company

Publisher: [Short Hills, N.J., etc., American Telephone and Telegraph Co.] Other title: BSTJ.Availability: Items available for reference: Central Library, BUET [623/BES] (22 ).

2. Bell telephone magazine

by -- American Telephone and Telegraph Company; American Telephone and Telegraph Company. Information Department

Publisher: [New York, American Telephone and Telegraph Co., etc.] Availability: Items available for reference: Central Library, BUET [623.85/BTM] (4 ).