00253    a2200097   450000100060000008200170000610000350002324500530005826000330011130000110014471558  a531.1133 QUR  aSh Aftab Ahmed, Naseer Qurashi  aWaves and Oscillations for BSc StudentshEnglish  aLahoreb1995cSh. Ghulam Ali  aX 231p