An essay on the foundations of geometry מאת Russell, Bertrand 1872-1970

Basic concepts of geometry מאת Prenowitz, Walter 1906-

The foundations of geometry and the non-Euclidean plane מאת Martin, George Edward 1932-

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Hilbert's fourth problem מאת Pogorelov, A. V. (Alekseæi Vasil§evich) 1919-

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

Basic mathematical concepts מאת Wren, Frank Lynwood 1894-

Projective and Euclidean geometry מאת Fishback, W. T. (William Thompson)

Projective and Euclidean geometry מאת Fishback, W. T. (William Thompson)

Projective and Euclidean geometry מאת Fishback, W. T. (William Thompson)

Projective and Euclidean geometry מאת Fishback, William Thompson