000 00505nam a2200145 4500
999 _c11152
_d11152
008 181012b ||||| |||| 00| 0 eng d
022 _a0746-8342
082 _aDPer 510.5 C697 Jan 2012-Sept 2015 v. 43 & 46, n. 1-4
100 _932197
_aStewart, Ian.
245 _aCups and downs/
_cIan Stewart.
260 _aWashington D. C.:
_bMathematical Association of America,
_c©Jul 2012-Sept 2015.
300 _av43 n1, pages 15-19:
_billustrtations;
_c28 cm.
650 0 _932198
_aMathematics.
942 _2ddc
_cPER