000 00309nam a22001337a 4500
999 _c17101
_d17101
008 190530b ||||| |||| 00| 0 eng d
020 _a18712003
100 _aG. Hurn
245 _aMath o magic
260 _alondon
_c2010
300 _a27p.
_b27p., ill.
_c12cm
440 _aMath O magic
942 _2lcc
_cCHAV