00260nam a2200109Ia 4500008004100000100001500041245003700056260002100093650001200114942000700126999001700133190216s9999||||xx |||||||||||||| ||und||  aPeter Gray 0aSookshma Darshana Prayoga Sahayi  bBhasha Institute  aPhysics  cBK  c38876d38876