*0011679532 *008961024s1981 xx# 000 0 nob *019 $bk *08230$a636.089 *100 $aBakken, Gudbrand$_132857100 *245 $aMindre sjukdom i løsdriftsbesetninger, hvorfor? *300 $aS.4-5 *773 $tNorsk landbruk$gnr 3 (1981)$x0332-5474$w(NO-LaBS)927680(tnr) *999 $z9600033831$anorart:9600033831 ^