00395nam a2200157Ia 4500008004100000082001600041100002000057245003600077250000600113260003400119300000800153650001600161650001800177653002400195700001800219170901s1977    xx            000 0 und d  a516.1bS48E  aSinha, K. D. P. 0aElementary Co-Ordinate Geometry  a7  aPatnabStudents Friendsc1977  a355  aMathematics  aPure Sciences  aCoordinate geometry  aPrasad, S. B.