TY  - BOOK
AU  - Williams, Frederick
TI  - The new telecommunications: : infraestructure for the information age
SN  - 0029352819
AV  - TK 5101 W458.1991
PY  - 1991///
CY  - New York 
PB  - :McMillan
KW  - Telecomunicación
N1  - Includes bibliographical references and index
ER  -