00299nam a2200109Ia 4500008004100000022001800041040002500059082002100084100002100105245004500126260001800171240214s9999    xx            000 0 und d  a0-13-170013-8  aNORSU-DumcNORSU-Dum  a305.233/B38/2006  aBeaty, Janice J. 0aObserving development of the young child  bPearsonc2006