TY  - BOOK
AU  - Stallings, William
TI  - ISDN and Broadband ISDN with frame Relay and ATM
SN  - 9788131705636
U1  - 004.64 STA-I 
PY  - 1999///
CY  - Noida
PB  - Pearson
UR  - https://books.google.co.in/books?id=OKXGcy046wMC&printsec=frontcover&dq=ISDN+and+Broadband+ISDIN+with+frame+Relay+and+ATM&hl=en&sa=X&ved=0ahUKEwj29Nra7dznAhUabn0KHfscD3gQ6AEIKjAA#v=onepage&q&f=false
ER  -