"Compiled from geochemical data generated by the National Uranium Resource Evaluation (NURE) program of the U.S. Department of Energy"--Accompanying pamphlet, p. 1.
Includes 9 ancillary maps and 10 diagrams.
Pamphlet Includes bibliographical references (pages 14-16).
Also available via the Internet from the USGS Web site.
Map A. Lanthanum distribution -- Map B. Titanium and Cerium distribution -- Map C. Geology and sample localities