TY  - BOOK
AU  - Schwartz,Mischa
AU  - Bennett,William R.
AU  - Stein,Seymour
TI  - Communication systems and techniques
U1  - 621.3811 
PY  - 1966///
CY  - New York
PB  - McGraw-Hill, 
KW  - TELECOMUNICACIONES
ER  -