TY  - BOOK
AU  - Heldman,Robert K.
TI  - Information telecommunications. Networks, products & services
SN  - 0-07-028040-1
U1  - 384 
PY  - 1994///
CY  - New YorkU.S.A.
PB  - McGraw-Hill
KW  - Telecomunicacion
KW  - Ciencia de la informacion
N1  - BIBLIOTECA: UACH-FING
ER  -