TY  - BOOK
AU  - Littlechild, S. C.
TI  - Elements of telecommunications economics
SN  - 0-906048-6
U1  - 621.382 
PY  - 1979///
CY  - New York
PB  - Peter Peregrinus
KW  - Modulation
KW  - Telecommunication
KW  - Telecommunication system-Economic aspect
N1  - Includes index
ER  -