00306nam a2200121Ia 450000500170000000800410001704100080005808200150006610000200008124500330010126000410013430000090017520260720174602.0260720s2005    xx            000 0 und d  aeng  a530.7 TRIT  aTripathi, Salil  aTeaching of physical science  aNew DelhibDominant Publishersc2005  a281p