00321nam a2200121Ia 450000500170000000800460001703700160006304000200007904100130009908400090011224500670012149000110018820250508151617.0008  250505s9999    xx            000 0 eng d  aPeriodicals  aFEDLbengcFEDL  aeng2eng  qFEDL 0aUniversity of Iowa studies : Studies in education Vol. 7 and 8  vVol. 7