00386nam a2200133Ia 4500003000400000008004100004020001400045040000800059100001700067245007000084260003100154300001400185440005300199LDD181029s9999    xx            000 0 und d  a262111144  cLDD  aKlahr, Daivd 0aProduction system models of learning and developmentcDaivd Klahr  aCambridgebMIT Pressc1987  axii, 466p  aComputational models of cognition and perception