Stripping coal deposits on lower Lignite Creek, Nenana coal field, Alaska,
by Clyde Wahrhaftig and Joseph H. Birman.
- Washington, 1954.
- iv, 11 p. illus., maps (5 fold., 1 col. in pocket) tables. 27 cm.
- Geological Survey circular 310 .
- Geological Survey circular ; 310. .