00533nam a2200169Ia 450000500170000000800460001703700120006304000200007504100130009508400190010810000190012724501190014625000060026526000530027130000130032449000260033720250508155513.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDLbengcFEDL  aeng2eng  a373, RIVqFEDL  aRivlin Harry N 0aTeaching adolescents in secondary schools : The principles of effective teaching in junior and senior high schools  a2  aNew York, USAbAppleton - Century - Croftsc1961  axiv,479p  aTextbook in education