Callender, J. F.; Seager, William R.; Swanberg, Chandler A.
(Division of Geothermal and Hydropower Technologies, U.S. Dept. of Energy, 1983)
Relief shown by contours and spot heights. Scale 1:500,000. 1 cm. equals 5 km. 1 in. equals approx. 8 miles ; Lambert conformal conic projection based on standard parallels 33° and 45°; (W 109°--W 103°/N 37°-N 31°).