Sudan, Maṣlaḥat al-Misāḥah. and Sudan, Maṣlaḥat Istithmār al-Arāḍī wa-al-Miyāh al-Rīfīyah. 0008 prepared by the Sudan Survey Department ; United Nations Special Fund, Food and Agriculture Organization ; Sudan government cooperating agency... The Dept.
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Geological Survey (U.S.). Alfred H. Brooks, Geologist in charge ; Surveyed in 1903, 1905, 1906, 1907, and 1908. Relief shown by contours, spot heights, and form lines for un... U.S. Geological Survey.
Geological Survey (U.S.) and Douglas, Edward Morehouse, 1855-1932. United States Department of the Interior, Geological Survey ; E.M. Douglas, geographer Relief shown by contours and spot heights. "Elevations and t... The Survey.
Geological Survey (U.S.). Relief shown by contours and spot heights. U.S. Geological Survey.
Geological Survey (U.S.) and Douglas, Edward Morehouse, 1855-1932. Relief shown by contours and spot heights. "E.M. Douglas, Geographer in charge. Topography by Richard T. Evans. Triangulation by H.L. Baldwin, Jr. ... U.S. Geological Survey.
from Geological Survey atlas sheets; surveyed between 1893 and 1906; R.B.. Marshall, chief geographer. Relief shown by contours and spot heights. "... U.S. Geological Survey.
Matthes, François, 1874-1948 and Evans, R. T. (Richard Tranter), 1881-1966. U.S. Dept. of the Interior, Geological Survey, in cooperation with the National Park Service; topography by Francois E. Matthes and Richard T. Evan... The Survey.
Geological Survey (U.S.). U.S. Geological Survey ; surveyed in cooperation with the State of Oregon. Relief shown by contours and spot heights. Survey dates: 1908-1914. Titl... The Survey.
Geological Survey (U.S.). U.S. Geological Survey ; surveyed in cooperation with the State of Oregon. Relief shown by contours and spot heights. Survey dates: 1908-1914. Titl... The Survey.
Geological Survey (U.S.). U.S. Geological Survey ; surveyed in cooperation with the State of Oregon. Relief shown by contours and spot heights. Survey dates: 1908-1914. Titl... The Survey.