000 00310nam a2200133Ia 4500
008 250407s1900 xx 000 0 und d
041 _aeng
082 _a420
100 _aLayak Ramsharma
245 _aBrain GYM Mathematica Puzzles
260 _aunicorn Book
300 _a191P
650 _aGeneral English
999 _c356141
_d356141