*0011656336
*008951005s1995    xx#           000 0 eng
*019  $bk
*08230$a150.1
*100  $aLund, Thorleif$_131331100
*245  $aMetrical solutions for causal effects
*300  $aS. 195-204
*773  $tScandinavian journal of educational research$gVol. 39, no. 3 (1995)$x0031-3831$w(NO-LaBS)298121(tnr)
*8564 $uhttps://doi.org/10.1080/0031383950390302
*999  $z9500195528$anorart:9500195528
^