TY  - BOOK
AU  - Daly, Edward A.
AU  - Hansell, Kathleen J.
TI  - Visual Telephony 
SN  - 1580530230
U1  - 621.3885 
PY  - 1999///
CY  - Boston : 
PB  - Artech House, 
KW  - Video Telephony
N1  - YY
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/1-58053-023-0.pdf
ER  -