TY  - BOOK
AU  - Blake, Roy
TI  - Digital & analog communication systems 7ed
SN  - 8120334116 (paperback)
PY  - 2008///
CY  - [S.l.]
PB  - PHI LEARNING PVT LTD
UR  - http://www.amazon.com/exec/obidos/ASIN/8120334116/chopaconline-20
ER  -