Schindler, G. E. (1982). A History of engineering and science in the bell system: Switching technology ( 1925-1975 ). United States of American: Bell Telephone Laboratories, Inc.
Chicago Style aipamenaSchindler, G. E. A History of Engineering and Science in the Bell System: Switching Technology ( 1925-1975 ). United States of American: Bell Telephone Laboratories, Inc, 1982.
MLA aipamenaSchindler, G. E. A History of Engineering and Science in the Bell System: Switching Technology ( 1925-1975 ). United States of American: Bell Telephone Laboratories, Inc, 1982.
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