00301nam a2200109Ia 4500008004100000082001500041100001700056245005200073250000800125260004500133300001300178190709s9999    xx            000 0 und d  a371(1) M31  aMursell, J L 0aSucessful teaching its psychological principles  a2nd  aNew YorkbMcGraw - Hill Book & Kogc1954  axiii,321