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Displaying 1-1 of 1 results for author "Zacharisen, Donald H."
Supplementary world maps of F2 critical frequencies and maximum usable frequency factors / Donald H. Zacharisen.
- Text
- Washington, D.C. : National Bureau of Standards, United States Department of Commerce, Office of Technical Services, 1960.
- 1960
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo46583
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