Snapper, Ernst Metric affine geometry [by] Ernst Snapper [and] Robert J. Troyer. - New York Academic Press [1971] - xx, 435 p. illus. 24 cm. Bibliography: p. [429] ISBN: 0126536503 LCCN: 76154402 Subjects--Topical Terms: Geometry, Affine.Vector spaces LC Class. No.: QA477 / .S63 Dewey Class. No.: 516/.4