TY  - BOOK
AU  - Spragins,John D.
TI  - Telecommunications: protocols and design 
SN  - 0-201-09290-5
AV  - TK5105.5 S67
PY  - 1991///
CY  - Reading, Mass.
PB  - Addison-Wesley
N1  - Bibliografia: p. 657-701
ER  -