Coxeter, H. S. M. (Harold Scott Macdonald), 1907- The real projective plane / by H. S. M. Coxeter. - 2nd ed. - Cambridge : Cambridge University Press, 1955. - xi, 226 p. : ill. ; 23 cm. Bibliography: p. 219-220. Subjects--Topical Terms: Geometry, Projective.