TY  - BOOK
AU  - Thorpe, Nicolas M.
AU  - Ross, Derek
TI  - X.25 Made Easy 
SN  - 0139721835
U1  - 004.62 
PY  - 1992///
CY  - New York : 
PB  - Prentice-Hall, 
KW  - Computer Network Protocols
KW  - Packet Switching Data Transmission
N1  - NY
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/0-13-972183-5.pdf
ER  -