1921. National Geographic Society (U.S.). Relief shown by hachures.; "Engraved and Printed at The Matthews-Northrup Works, Buffalo, N.Y." 71 x 93 centimeters Scale approximately 1:14,572,80... The Society (Washington, D.C), 1921.
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1921. National Geographic Society (U.S.). Relief shown by shading and spot heights.; Includes "Abbreviations and translations."; Insets: Galäpagos Archipelago.--Economic map of South Ameri... National Geographic Society (Washington), 1921.