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Electronic media : a guide to trends in broadcasting and newer technologies, 1920-1983
Sterling, Christopher H. - 1984
Persistent link: https://www.econbiz.de/10000020254
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United States Telephone Association / 1
United States Telephone Association - Washington, DC - Nachgewiesen 1984(1985) - 1987(1988)
Persistent link: https://www.econbiz.de/10000609020
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United States Telephone Association / 2
United States Telephone Association - Washington, DC - Nachgewiesen 1984(1985) - 1987(1988)
Persistent link: https://www.econbiz.de/10000609021
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Current business reports / Annual survey of communication services
Washington, DC : US Gov. Print. Off. - 1990(1992) -
Persistent link: https://www.econbiz.de/10000574125
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Statistics of communications common carriers : the year ended ...
USA / Communications Commission - Washington, DC : US Gov. Print. Off. - 1957(1959) -
Persistent link: https://www.econbiz.de/10000427350
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International information and communications technology markets and infrastructures : some comparative statistics
Pols, Axel - In: The new economy and economic growth in Europe and the …, (pp. 325-341). 2002
Persistent link: https://www.econbiz.de/10001672388
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Statistics of communications common carriers
USA / Communications Commission - Washington, DC - 1994 -
Persistent link: https://www.econbiz.de/10001679329
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Current business reports / Annual survey of communication services
USA / Bureau of the Census - Washington, DC - 1994(1996) - 1998(1999) nachgewiesen
Persistent link: https://www.econbiz.de/10001561460
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Enterprise statistics / 1
Washington, DC : US Gov.Print.Off. - 1987(1990) -
Persistent link: https://www.econbiz.de/10000501650
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Census of agriculture / 3
USA / Bureau of the Census - Washington, DC : US Gov.Print.Off. - Nachgewiesen 1987=1988(1990) -
Persistent link: https://www.econbiz.de/10000501701