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Unsolved Problems in Geometry: Unsolved Problems in Intuitive Mathematics (Problem Books in ...
by Hallard T. Croft, Kenneth J...
ISBN: 9781461269625
List Price: $119.00
3.
Unsolved Problems in Geometry
by Croft, H. T., Falconer, K. ...
ISBN: 9780387975061
List Price: $84.95
4.
Unsolved Problems in Geometry (Problem Books in Mathematics: Unsolved Problems in Intuitive ...
by Croft, H.T., Falconer, K. J...
ISBN: 9783540975069