00313nam a2200121Ia 4500008004100000100001600041245003100057250001200088260005100100650001600151942000700167999001700174190216s9999||||xx |||||||||||||| ||und||  aJoshi . D.D 2aA Text Book For Class X 12  a1st Ed.  bNational Council Of Educational Researchc1989  aMathematics  cBK  c31044d31044