Teleprinter switching
Rossberg,Ehrhard A.
Teleprinter switching - New York : D.VAn Nostrand , 1960. - 351 p. CD2492
(HB)
Teleprinter switching
621.3825 / ROS
Teleprinter switching - New York : D.VAn Nostrand , 1960. - 351 p. CD2492
(HB)
Teleprinter switching
621.3825 / ROS