00406nam a2200145Ia 4500008004100000082001600041100002000057245003600077260003500113300000800148650003900156650001500195653002700210700002300237170901s1969    xx            000 0 und d  a154.4bB53P  aBilodeau, E. A. 0aPrinciples of Skill Acquisition  aNew YorkbAcademic Pressc1969  a368  aPhilosophy and related disciplines  aPsychology  aPsychology of learning  aBilodeau, INA McD.