Helgason, Sigurdur, 1927- Helgason, Sigurdur, 1927- Differential geometry and symmetric spaces. - New York, Academic Press, 1962. - Pure and applied mathematics, 12 . - Pure and applied mathematics (Academic Press) ; 12. . Includes bibliographical references. LCCN: 62013107 /L/r84 Subjects--Topical Terms: Geometry, Differential.Symmetric spaces. LC Class. No.: QA3 / .P8 vol. 12 Dewey Class. No.: 516.7