TY  - DATA
AU  - Biswas,Nripendra N.
TI  - Principles of telegraphy
SN  - 0862492459
U1  - 621.385 22
PY  - 1964///
CY  - New Delhi
PB  - Media promoters & Publishers
KW  - Telegraphy
KW  - Communication engineering
N1  - Includes bibliographical references and index
ER  -