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Old and New Unsolved Problems in Plane Geometry and Number Theory (Dolciani Math

Old and New Unsolved Problems in Plane Geometry and Number Theory (Dolciani ...

Old and New Unsolved Problems in Plane Geometry and Number Theory by Victor Klee

Solved and Unsolved Problems in Number Theory, Daniel Shanks

Schaum's Outline of Theory and Problems of Geometry: Includes Plane, Analytic, T

Schaum's Outline of Theory and Problems of Geometry: Includes Plane,...

Schaum's Outline Of Theory and Problems Of Plume and Solid Analytic Geometry