00324nam a2200121Ia 450000500170000000800410001704100080005808200150006610000190008124500500010026000430015030000090019320260720174609.0260720s2004    xx            000 0 und d  aeng  a500.7 KUMC  aAnilkumar, S S  aContent based methodology of teaching science  aMysorebVijayalakshmi Prakashanac2004  a280p