TY  - BOOK
AU  - Held,Gilbert
AU  - Held,Gilbert
TI  - Data communications networking devices: characteristics, operation, applications 
SN  - 0471909475 :
AV  - TK5105.5 .H44 1986
U1  - 004.6 19
PY  - 1986///
CY  - Chichester, New York
PB  - Wiley
KW  - Computer networks
KW  - Equipment and supplies
KW  - Data transmission systems
N1  - Rev. ed. of: Data communication components. c1979; Includes index
ER  -