A History of engineering and science in the Bell System 
prepared by members of the technical staff, Bell Telephone Laboratories ; M.D. Fagen, editor. 
 - [New York]  The Laboratories  1975-<c1985 > 
 - v. <1-7 >  ill.  25 cm. 
<br/><br/> Vol. 3 prepared by A.E. Joel, Jr. and other members of the technical staff, Bell Telephone Laboratories; G.E. Schindler, Jr., editor. 
<br/><br/>Includes bibliographies and indexes. 
<br/><br/>[1] The early years (1875-1925) -- [2] National service in war and peace (1925-1975) -- v. 3. Switching technology (1925-1975) -- [4] Physical sciences (1925-1980) -- [5] Communications sciences (1925-1980) -- [6] Electronics technology (1925-1975) -- [7] Transmission technology (1925-1975) 
<br/><br/><label>ISBN: </label>0932764002 (v. 2) 
<br/><br/><label>LCCN: </label>75031499 //r854 
<br/><br/><label>Subjects--Corporate Names: </label><br/>American Telephone and Telegraph Company.--History.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone--History.--United States<br/>Electronics--History.--United States<br/>Telecommunication--History.--United States
<br/><br/><label>LC Class. No.: </label>TK6023  / .H57 1975 
<br/><br/><label>Dewey Class. No.: </label>621.385/0973