00270nam a2200097Ia 450000500170000000800410001710000220005824500370008026000460011730000090016320260413100714.0230516s9999||||xx |||||||||||||| ||und||  aPuri B.R & others 0aPrinciples of physical chemistry  bJalandhar  shobhan lal chand & compc1996  a1327