ITU-R OPINION 23
Observations Needed to Provide Basic Indices for Ionospheric Propagation
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| Organization: | ITU-R |
| Publication Date: | 1 January 1999 |
| Status: | active |
| Page Count: | 1 |
Document History
ITU-R OPINION 23
January 1, 1999
Observations Needed to Provide Basic Indices for Ionospheric Propagation
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