TY  - BOOK
TI  - A history of engineering and science in the bell system : communications sciences (1925-1980) / 
SN  - 09327640691
U1  - 621.382 
PY  - 1984///
CY  - Indianapolis, Indiana
PB  - AT&T Bell Laboratories, 
KW  -  Engineering
KW  - Communication systems
KW  -  Telecommunication
N1  - Includes index
ER  -