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Dyfyniad Arddull ChicagoSpringer, C. E. Geometry and Analysis of Projective Spaces. London: Freeman, 1964.
Dyfyniad MLASpringer, C. E. Geometry and Analysis of Projective Spaces. Freeman, 1964.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.