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  • Chad-Libya boundary.

    "503864 8-78." "Source of data: Office of the Geographer, Department of State." Includes note and key map. Available also through the Library of Congress Web site as a raster image.

    • Contributor: United States. Central Intelligence Agency - United States. Department of State. Office of the Geographer
    • Original Format: Maps
    • Date: 1978
  • Central African Republic-Chad boundary.

    "58919 8-68." "Source of data: Office of the Geographer, Department of State." Includes note and key map. Available also through the Library of Congress Web site as a raster image.

    • Contributor: United States. Central Intelligence Agency - United States. Department of State. Office of the Geographer
    • Original Format: Maps
    • Date: 1968
  • Chad-Libya boundary.

    "2-61." "Source of data: Office of the Geographer, Department of State." Includes note and key map. Available also through the Library of Congress Web site as a raster image.

    • Contributor: United States. Central Intelligence Agency - United States. Department of State. Office of the Geographer
    • Original Format: Maps
    • Date: 1961
  • Chad-Niger boundary.

    "54339 8-66." Also shows wells. "Source of data: Office of the Geographer, Department of State." Includes note and key map. Available also through the Library of Congress Web site as a raster image.

    • Contributor: United States. Central Intelligence Agency - United States. Department of State. Office of the Geographer
    • Original Format: Maps
    • Date: 1966