*0011421441
*008061201s1999    xx#           000 0 eng
*019  $bk
*08230$a618.2
*100  $aKristensen, Petter$_133011300
*245  $aMultiple pregnancies among women engaged in agriculture in Norway, 1967-91
*300  $aS. 57-64 : ill.
*500  $aHeftet har tittelen: Arbeidsmedisinsk epidemiologi
*650  $aLandbruk$2norart$_11582500
*650  $aflerbarnssvangerskap$9nor$2norart$_159747500
*700  $aIrgens, Lorentz M.$_131804300
*773  $tNorsk epidemiologi$gÅrg. 9, nr 1 (1999)$x0803-2491$w(NO-LaBS)914842(tnr)
*8564 $uhttps://doi.org/10.5324/nje.v9i1.444
*999  $z600398097$anorart:600398097
^