π^3 21 Aug. 1984 (see "Cecropia", posted 21 March 2012)
2π^3 23 Αug. 2015
20π 17 June 2016 (a cycle)
Showing posts with label ancient units of length. Show all posts
Showing posts with label ancient units of length. Show all posts
Thursday, July 28, 2016
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