TY  - BOOK
AU  - Barker,Forrest L.
TI  - Communications electronics: systems, circuits, and devices 
SN  - 0131538837
PY  - 1987///
CY  - Englewood Cliffs, N.J. : 
PB  - Prentice-Hall, 
KW  - Telecommunication
N1  - Includes index; Bibliography: p. 647-648
ER  -