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100   $a20100402d1965      ua             0
101 0 $aeng
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135   $aurbn||||||ada
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aIonospheric radio propagation /$fKenneth Davies
210  1$aWashington, D.C. :$cU.S. Dept. of the Commerce, National Bureau of Standards :$cG.P.O.,$d1965.
215   $a1 online resource (xiv, 470 pages) $cillustrations
225 1 $aNBS monograph ;$v80
320   $aIncludes bibliographical references and index.
606   $aIonospheric radio wave propagation
606   $aIonospheric radio wave propagation$2fast
615  0$aIonospheric radio wave propagation.
615  7$aIonospheric radio wave propagation.
676   $a621.384/11
700   $aDavies$b Kenneth$027124
712 02$aUnited States.$bNational Bureau of Standards.
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912   $a9910714618503321
996   $aIonospheric radio propagation$9330089
997   $aUNINA