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*24500$aIonospheric HF radio propagation at high latitudes using conventional and spread spectrum modulation$cJodalen, Vivianne ... [et al.]
*260  $aKjeller$bForsvarets forskningsinstitutt$c1991
*300  $a179 s.$bill.
*4901 $aFFI/rapport$v91/7003
*500  $a"FFIE/556/172"
*533  $aElektronisk reproduksjon$b[Norge]$cNasjonalbiblioteket Digital$d2009-08-21
*7001 $aJodalen, Vivianne$d1964-$0(NO-TrBIB)90410018$_24293900
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^