Ayres, F. (1967). Schaum's outline of theory and problems of projective geometry. New York: Schaum Publishing Co..
Παραπομπή Chicago StyleAyres, Frank. Schaum's Outline of Theory and Problems of Projective Geometry. New York: Schaum Publishing Co., 1967.
Παραπομπή MLAAyres, Frank. Schaum's Outline of Theory and Problems of Projective Geometry. New York: Schaum Publishing Co., 1967.
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