TY  - BOOK
AU  - Ettinger,J.E.
TI  - Communication networks : private networks within the public domain
SN  - 0080286097
U1  - TK/5105.5 
PY  - 1985///
CY  - Devonshire , England
PB  - A. Wheaton & Company Ltd.
KW  - Computer networks.
ER  -