TY  - BOOK
AU  - 
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 0076070239 :
SN  - 2
PY  - 1990///];copyright 1990.46
CY  - New York, NY
PB  - McGraw-Hill Information Services Co.
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Computer networks.;Data transmission systems
N1  - 5
ER  -