00306nam a2200109Ia 450000500170000000800410001702000180005808200140007624500660009026000310015630000090018720260205100614.0260111s9999||||xx |||||||||||||| ||und||  a9788176938754  a500  B72U 0aUnderstanding universe: revealing  the unknown world of facts  aNew DelhibBpi Indiac2011  a80p.