TY  - BOOK
AU  - Griffiths, John M.
TI  - ISDN Explained Worldwide Network and Applications Technology 
SN  - 0471979058
U1  - 004.66 
PY  - 1998///
CY  - Chichester : 
PB  - John Wiley, 
KW  - Integrated Services Digital Networks
N1  - NN
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/0-471-97905-8.pdf
ER  -