TY  - BOOK
AU  - Biswas,Nripendra N.
TI  - Principles of telegraphy
SN  -  8185099049
U1  - 621.382 
PY  - 1986///
CY  - Bombay
PB  - Media promoters & publishers
KW  - Applied science
KW  - Principles of telegraphy
KW  - Physics
KW  - পদার্থবিদ্যা
N1  - Index
ER  -