TY  - BOOK
AU  - Patanjali, Premchand
TI  - Sanchar-siddhant ki roop rekha
U1  - 302.23 21st
PY  - 1992///
CY  - Ghaziabad
PB  - K L Pachauri
KW  - Communication; Mass-media; Tele communication-India
ER  -