00310nam a2200109Ia 4500008004000000020001600040082001600056100002400072245006900096260002700165300000800192210210b1971   xxu||||| |||| 00| 0 eng d  a06 045411 3  a370.15 RIPR  aRIPPLE (Richard E).  aReadings in learning and human abilities educational psychology.  aNYbHarper & Rowc1971  a484