00317nam a2200121Ia 450000500170000000800410001708200150005810000160007324500420008926000290013130000080016065000270016820240814120810.0240813s9999||||xx |||||||||||||| ||und||  a370.15 NOR  aNorem, G.M. 0aStudies in the psychology of learning  aIowabUniversity of Iowa  a75p  aEducational psychology