TY - BOOK AU - Biswas N.N. TI - Principles of Telegraphy SN - 0000024129 U1 - 62.382 PY - 1964/// CY - Bombay PB - Media Promoters and Pub.(pvt)., Ltd.,Bombay KW - Telegraphy KW - Principles KW - Telegraphy(621.382) ER -