Number:
1276
Author:
Issue:
ET Vol 15, May 1862
Tags:
Non-Conic Curves & Locus/Envelopes
Solved by:
E. Lampe, MQ Vol 61
Solved by:
J. McDowell, ET Vol 15, Jun 62
Solved by:
W.A. Whitworth, ET Vol 15, Jun 62