PRESENTED BY S.S.GEHLOT ADEN/BR/JU G.S. GAUTAM ADEN/JND S.P.VYAS AXEN/C/JU R. MATHUR AXEN/C/JP GUIDED BY SH. A.K.GUPTA PROF.TRACK-I IRICEN-PUNE.
WHAT DO ALL THESE PICTURES HAVE IN COMMON?. CHAPTER ONE, SECTION ONE WAVES.