000 00269nam a2200121Ia 4500
008 230321s9999 xx 000 0 und d
082 _bRAO
100 _aRao, J.M
245 0 _aFascinating Triangular Numbers
260 _bNeelkamal
_c2003
300 _a135
942 _cBK
999 _c1322
_d1322