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*1001 $aJensen, Eberhart$0(NO-TrBIB)90077434$_51276700
*24510$aPhotoelectric photometry of sunspots :$ba preliminary report$cby Eberhart Jensen and Per Ofstad. The pinhole photometer / by Gunnar Eriksen
*260  $aOslo$bThe Institute$c1963
*300  $a20, 3 s.$bill. tab. fig.
*4901 $aReport / Institute of Theoretical Astrophysics - Blindern - Oslo$vno. 15
*61027$aSolobservatoriet$0(NO-TrBIB)90259243$2bare$_11563900
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*7001 $aOfstad, Per$0(NO-TrBIB)90313304$_86112000
*70012$aEriksen, Gunnar$0(NO-TrBIB)1023082$tThe pinhole photometer$_59086500
*830 0$aReport (Universitetet i Oslo. Institutt for teoretisk astrofysikk)$x0472-1691$vno. 15$w998111461704702201$_11436000
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