TY  - BOOK
AU  - Loomis, Mary E. S.
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 131964690
SN  - 2
PY  - 1983///];copyright 198346
CY  - Englewood Cliffs, NJ
PB  - Prentice-Hall
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Data transmission systems
KW  - sears0
N1  - Includes index; 5
ER  -