003410000a22001210004500060000800000082001500008100002200023245004000045260004400085260000900129300000800138650007300146  a100  a370.15 BER  aBernard, Harold W  aPsychology of learning and teaching  aNewyork, Mc Graw- Hill Book Company Inc  c1954  a436  aPsychology/ Learning as  a growth process/ Reasoning problem solving