1. Geologic and isostatic gravity map of the Nenana Basin, central Alaska [cartographic material] Yale Public content 2002. 2015-12-14T18:27:12Z. 2015-12-21T18:14:30Z. Geological Survey (U.S.). The Survey ; Information Services [distributor]. English. cartographic image. Public. Alaska, Nenana River Valley, and Nenana River Valley.