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Keld S. Dueholm

1 book

Geologic Mapping of Tunnels Using Photogrammetry--Camera and Target Positioning: Usgs Open-File Report 90-49 by Keld S. Dueholm, Jeffrey A. Coe

Geologic Mapping of Tunnels Using Photogrammetry--Camera and Target Positioning: Usgs Open-File Report 90-49

Keld S. Dueholm, Jeffrey A. Coe

22 pages • paperback

nonfiction politics challenging informative reflective medium-paced