00305nam a2200133Ia 4500008004100000082001000041082001000051100001700061100002900078245001700107260001100124260002700135260000900162230118s9999||||xx |||||||||||||| ||und||  a515.3  bNAR/C  asbnarayanan  bt.k manicavachagompillay 0acalculus      amadras  bs viswanathan printers  c1980