Das, P. N.
Introduction to automatic telephony for the undergraduate students of tele-communication and electrical engineering - 1st ed. - Calcutta Modern Book Agency 1975 - 212 p. illus 22 cm.
Includes bibliographies
Telephony engineering
623.85 / DAS/1975
Introduction to automatic telephony for the undergraduate students of tele-communication and electrical engineering - 1st ed. - Calcutta Modern Book Agency 1975 - 212 p. illus 22 cm.
Includes bibliographies
Telephony engineering
623.85 / DAS/1975