Cofnodi Dyfyniadau

Dyfyniad APA
Estados Unidos Geological Survey & Charles D. Walcott. (1897). Map showing condition and progress of topographic surveys and location of gaging stations for the fiscal year 1896-1897. U. S. Geological Survey.
Dyfyniad Arddull Chicago
Estados Unidos Geological Survey and Charles D. Walcott. Map Showing Condition and Progress of Topographic Surveys and Location of Gaging Stations for the Fiscal Year 1896-1897. U. S. Geological Survey, 1897.
Dyfyniad MLA
Estados Unidos Geological Survey and Charles D. Walcott. Map Showing Condition and Progress of Topographic Surveys and Location of Gaging Stations for the Fiscal Year 1896-1897. U. S. Geological Survey, 1897.
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