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https://forum.hamradio.si/
e-knjiga Beginning of Radio Comunications
https://forum.hamradio.si/viewtopic.php?f=39&t=21245
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e-knjiga Beginning of Radio Comunications
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21 Okt 2019, 14:39
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http://www.mediafire.com/file/amloej089fgmkpx/Beginning_Radio_Communications.pdf/file