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*1001 $aRussell, James D.$0(NO-TrBIB)90166868$_73972200
*24514$aThe audio-tutorial system$cJames D. Russell
*260  $aEnglewood Cliff, N.J.$bEducational Technology Publications$cc1978
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*4901 $aThe Instructional design library$v3
*650 0$aAudio-visual education$_34501800
*650 0$aIndependent study$_36098800
*650 0$aProgrammed instruction$_13424200
*830 4$aThe Instructional design library$v3$_33143100
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