Guggenheimer, Heinrich W. Plane geometry and its groups [by] Heinrich W. Guggenheimer. - San Francisco Holden-Day [1967] - xii, 288 p. illus. 24 cm. - Holden-Day series in mathematics . Bibliography: p. 266-267. LCCN: 67013838 Subjects--Topical Terms: Geometry, PlaneGroups, Theory of. LC Class. No.: QA474 / .G8 Dewey Class. No.: 513/.1