00405nam a2200145Ia 450000500170000000800460001703700120006304000210007504100130009608400210010910000160013024500480014626000570019430000080025120250508155528.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDL bengcFEDL  aeng2eng  a375.5, KOTqFEDL  aKothari D S 0aSome aspects of secondary science education  aNew Delhi, IndiabUniversity Grants Commissionc1962  a9p.