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Number:
6630
Author:
J.M. Nash
Issue:
ET Vol 34, Mar 1881
Tags:
Non-Conic Curves & Locus/Envelopes
Solved by:
F.E. Cave, MQ Vol 74
Solved by:
J. Cullen, MQ Vol 74
Solved by:
G.D. Wilson, MQ Vol 74