TY  - BOOK
AU  - Patanjali, Premchand 
TI  - Sanchar sidhant ki ruprekha 
U1  - 302.23 H 
PY  - 2008///
CY  - Ghaziabad (U.P)
PB  - K. L. Pachauri Prakashan
KW  - Social Science
ER  -