00326nam a2200109Ia 4500008004100000040002500041082001500066100005800081245003100139260003600170300001000206230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a 371.3 R52  aNavarro ,Rosita L. and Sambrano, Guillerma E.Sambrano 0aToward effective teaching   bNational Book Store, Inc.c1980  a216p.