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1Vydáno 1999“...QC 1 .O58 1999...”
Kniha -
2Wireless and empire : geopolitics, radio industry, and ionosphere in the British Empire, 1918-1939 /Autor Anduaga, Aitor“...QC 973.4 .I6 .A577 2009...”
Vydáno 2009
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Kniha