*0011676453 *008961024s1980 xx# 000 0 nob *019 $bk *08230$a375.53 *100 $aTjønneland, Knut$_169235300 *245 $aElektrisitetslære - energi *300 $aS.FF16-18 *773 $tSkoleforum$gÅrg.79, nr.16 (1980)$x0332-7167$w(NO-LaBS)759810(tnr) *999 $z9600030360$anorart:9600030360 ^