Griesinger, Frank Kern
How to cut costs and improve service of your telephone telex twx and other telecommunications Frank kern Griesinger - New York: McGraw-Hill, 1974. - 310p. .
HB
Eng
0070247609
telephone-Economic aspects
Telecommunication- Economic aspects
621.385 / GRH
How to cut costs and improve service of your telephone telex twx and other telecommunications Frank kern Griesinger - New York: McGraw-Hill, 1974. - 310p. .
HB
Eng
0070247609
telephone-Economic aspects
Telecommunication- Economic aspects
621.385 / GRH