00483nam a2200145Ia 4500008004100000082001300041100002600054245004000080260001800120300001400138490007400152600005900226600002600285650002600311140224s9999    xx            000 0 und d  a159.9 K9  aHenry, Nelson B., ed.  aThe psychology of learning; Part II  aChicagoc1969  axiv,463p.  aThis is 41st yearbook. Distributed by University of Chicago Illinois.  a Nelson B.Henry and assisted  E.R.Guthrie (and others)  aGuthrie, E.R., assis.  aLearning, Psychology