a maths-of-Xmas advent calendar (blog, no grid :-( ) from old England ... http://www.mathistopheles.co.uk/
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- [Boston.pm] Tech meeting "Christmas Lights Tour" Dec... Bill Ricker
- Re: [Boston.pm] Tech meeting "Christmas Lights Tour&... Bill Ricker
- Re: [Boston.pm] Tech meeting "Christmas Lights T... Bill Ricker
