00334nam a2200133Ia 4500008004100000100004400041245002100085250001200106260003400118300000800152650001600160942000700176999001700183190216s9999||||xx |||||||||||||| ||und||  a"Kochumman.C, K. M Mathew,  K.J. Ummar" 0aPragathakalanam-  a1st Ed.  bKerala Bhasha Institutec1974  a468  aMathematics  cBK  c38933d38933