Projective geometry : vol. 2 / Oswald Veblen and John Wesley Young. Veblen, Oswald, 1880-1960. Young, John Wesley, 1879-1932, joint author. Geometry, Projective. QA471 .V4 516.5 VEP Includes index Boston, New York [etc.] Ginn and Company [1910-18] [1910-18] 1910 Text xii, 511 p. : eng