00289nam a2200121Ia 450000500170000000800410001704100080005808200150006610000150008124500240009626000380012030000090015820260720174536.0260720s2005    xx            000 0 und d  aeng  a500.7 JOST  aJoshi, S R  aTeaching of science  aNew DelhibA P H Publishingc2005  a338p