00258nam a2200109Ia 450000500170000000800410001708200170005810000170007524500240009226000210011630000110013720260205055415.0260111s9999||||xx |||||||||||||| ||und||  a530.7  G749T  aGoyal, Suraj 0aTeaching of physics  aN DbRajatc2007  a264 p.