Final acts of the world administrative radio conference for dealing with frequency allocations in certain parts of the spectrum : (WARC-92) / org. International Telecommunication Union
Final acts of the regional administrative conference of the members of the Union in the european broadcasting area to revise certain parts of the Stockholm Agreement (1961) [texto policopiado] : Geneva 1985 / International Telecommunication Union
Radio regulations / International Telecommunication Union
Handbook the ionosphère and its effects on radiowave propagation : a guide with background to ITU-R procedures for radioplanners and users / ITU-R
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