00467nam a2200145Ia 450000500170000000800410001702000180005804100080007608200150008410000200009924500580011926000540017730000150023165000750024620191122164946.0190710s9999    xx            000 0 und d  a81-7024-865-5  aeng  a375.5072 G  aGupta, Naresh K 0aResearch in teaching of science models and strategies  aNew Delhib: A P H Publishing Corporation, c1997  axi, 210p.   aScience - Study and teaching - Resource a| Science teaching - Method