Ferrians, O.J., Jr., 1971, Preliminary engineering geologic maps of the proposed trans-Alaska pipeline route, Gulkana quadrangle: U.S. Geological Survey Open-File Report 71-102, 2 sheets, scale 1:125,000.
Maps & Other Oversized SheetsDerivative; Engineering; Engineering Geologic Map; Engineering Geology; Geologic Map; Geology; Permafrost and Periglacial; Resources