Lydolph, Paul E, Geography of the U.S.S.R. /Paul E. Lydolph ; cartographers, Don and Denise Temple. - third edition. - New York : Wiley, (c)1977. - xi, 495 pages : illustrations ; 26 cm. Includes bibliographies and index. LCCN: 76026657 LC Class. No.: DK28 / .G464 1977 DK28