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Number:
12231
Author:
G.B.M. Zerr
Issue:
ET Vol 47, Feb 1894
Tags:
Non-Conic Curves & Locus/Envelopes
Solved by:
R.F. Davis, ET Vol 47, Apr 94
Solved by:
A. Droz-Farny, ET Vol 47, Apr 94
Problem in the journal
Solution