Atlas of radio wave propagation curves for frequencies between 30 & 10,000 MC/S.

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110 2 ⊔ ‡aYūseishō Denpa Kenkyūjo (Japan)
245 1 0 ‡aAtlas of radio wave propagation curves for frequencies between 30 & 10,000 MC/S. ‡cPrepared by the Radio Research Laboratories, Ministry of Postal Services.
260 ⊔ ⊔ ‡aTokyo ‡b[Dempa Kenkyūjo (romanized form) ‡c1957]
300 ⊔ ⊔ ‡a244 p. ‡billus. ‡c30 cm.
504 ⊔ ⊔ ‡aIncludes bibliographies.
538 ⊔ ⊔ ‡aMode of access: Internet.
650 ⊔ 0 ‡aShortwave radio ‡xTables
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