000 00429nam a2200169Ia 4500
008 160606s9999 xx 000 0 und d
082 _a510
084 _aRSR-1 B
100 _aNational Council for Educational Research and Trai
245 _aMathematics
245 _cNational Council for Educational Research and Trai
250 _a1st Ed.
260 _c1988
300 _a425 Pages
365 _aRs. 13.2
942 _cBK
999 _c15358
_d15358