TY  - BOOK
AU  - Harper,William L.
AU  - Pollard,Robert C.
TI  - Data communications desk book ; a systems analysis approach
SN  - 0131963783
PY  - 1982///
CY  - Englewood Cliffs, N.J. : 
PB  - Prentice-Hall, 
KW  - Data transmission systems
N1  - Includes index
ER  -