Schaum's outline of geometry av Rich, Barnett 1906-, Thomas, Christopher 1973-

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Convex functions constructions, characterizations and counterexamples av Borwein, Jonathan M., Vanderwerff, Jon D.

A gateway to modern geometry the Poincare half-plane av Stahl, Saul

Geometry and the imagination. av Hilbert, David, 1862-1943

Euclidean and non-Euclidean geometries development and history av Greenberg, Marvin J.

Euclidean and non-Euclidean geometry an analytic approach av Ryan, Patrick J.

Deductive systems finite and non-euclidean geometries av Lockwood, James R

Some geometrical properties and physical applications in a non-Euclidean universe [microform] av Lesaca, Reynaldo M. 1922-

Four-dimensional geometry an introduction av Hess, Adrien L.

The Foundations of geometry and the non-euclidean plane. av Martin, George E.