TY  - BOOK
AU  - Krishna Sree,V.
TI  - Communication systems: for polytechnic E.C.E- IV semester : second year 
U1  - 621.38 23
PY  - 2011///
CY  - Vijayawada
PB  - V.G.S Book links
KW  - Telecommunication systems
KW  - Telecommunication
KW  - switching system
N1  - Includes bibliographical references and index
ER  -