TY  - BOOK
AU  - CCITT
TI  - BLUE BOOK,VOL.VIII.3: DATA COMMUNICATION NETWORKS:TRANSMISSION,SIGNALLING AND SWITCHING NETWORK ASPE
SN  - ERNET
U1  - 335 
PY  - 1989///
CY  - GENEVA
PB  - ITU
N1  - GRATIS
ER  -