TY  - BOOK
AU  - Black,Uyless
TI  - Computer networks: protocols, standards, and interfaces 
SN  - 9788120310414
AV  - TK 5105.5 .B56 1993
U1  - 004.6 20
PY  - 1993///
CY  - New Delhi
PB  - Prentice hall
KW  - Computer networks
N1  - Includes bibliographical references and index
ER  -