000 00517nam a2200145 4500
999 _c13311
_d13311
008 190228b ||||| |||| 00| 0 eng d
022 _a0746-8342
082 _aDPer 510.5 C697 Jan 2012-Sept 2015 v. 43 & 46, n. 1-4
100 _aHalleck, Ezra.
_937208
245 _aTeaching tip:
_bconsider a circular cow
260 _aWashington D. C.:
_bMathematical Association of America,
_ccJul 2012-Sept 2015.
300 _av43 n2, pages 133-134:
_bIllustrations;
_c25 cm.
650 _aTeaching
_xTip.
_937207
942 _2ddc
_cPER