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*1001 $aSolvang, Ragnar$d1930-$0(NO-TrBIB)90199998$_13799000
*24510$aMatematikk fagmetodikk$cRagnar Solvang, Stieg Mellin-Olsen
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*533  $aElektronisk reproduksjon$b[Norge]$cNasjonalbiblioteket Digital$d2017-10-17
*653  $amatematikk$aundervisning$_11710500
*7001 $aMellin-Olsen, Stieg$d1939-$0(NO-TrBIB)90679826$_17447100
*85641$3Fulltekst$uhttps://urn.nb.no/URN:NBN:no-nb_digibok_2017101748027$yNettbiblioteket$zDigital representasjon
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^