Text ( visual ) : unmediated Synthetic projective geometry / by George Bruce Halsted. -- 4th ed. enlarged. -- New York : J. Wiley , 1906. -- 62 p. ; 24 cm. -- (Mathematical monographs / edited by Mansfield Merriman and Robert S. Woodward ; No. 2). -- Includes index. -- (BA4321338X) ; https://ci.nii.ac.jp/ncid/BA4321338X Author Heading(s): Halsted, George Bruce