000 00312nam a2200121Ia 4500
008 211214s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aHealth, Royal Vale
245 0 _aMath e magic
250 _a2
260 _bDover Publication mc.
_aNew York
_c1953
942 _c1
999 _c34131
_d34131