Mathematics Illuminated, Unit 8, Geometries Beyond Euclid
directed by David Poulshock, fl. 2008; presented by Dan Rockmore, 1961-; produced by Jacquelyn Blain, fl. 1995, Red Door Films and Oregon Public Broadcasting, in Mathematics Illuminated, Unit 8 (District of Columbia: Annenberg Learner, 2008), 28 mins
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