Principles of telephony /
Biswas, Nripendra Nath, 1928-
Principles of telephony / Nripendra Nath Biswas. - India : Radiant Books c1988 [reprinted 2000]. - 138 p. : ill. ; 22 cm.
Includes index.
818527309X
Telephone, Automatic.
621.385 BIS
Principles of telephony / Nripendra Nath Biswas. - India : Radiant Books c1988 [reprinted 2000]. - 138 p. : ill. ; 22 cm.
Includes index.
818527309X
Telephone, Automatic.
621.385 BIS