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Tetrahedral Gnomonic projection (obsolete) [UNLISTED]

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OBSOLETED BY https://bl.ocks.org/Fil/d5313cd939947169df5c37e896e5aa38.

The Tetrahedral Gnomonic projection, published by A. J. Potter in The Geographical Teacher, Vol. 13, No. 1 (SPRING, 1925), pp. 52-56.


Research by Philippe Rivière for d3-geo-projection issue 107.

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