Graustein, William C. Introduction to higher geometry by William C. Graustein. - New York The Macmillan Company 1947. - xv, 486 p. diagrs. - [A series of mathematical texts ed. by E.R. Hedrick] . - Series of mathematical texts. . LCCN: 91052287 //r90 Subjects--Topical Terms: Geometry LC Class. No.: QA445 / .G83 Dewey Class. No.: 513.5