Rare-earth mineral deposits of the Mountain Pass district, San Bernardino County, California, by J. C. Olson [and others] with a foreword on History of the discovery at Mountain Pass, California, by D. F. Hewett.
Washington, U. S. Govt. Print. Off., 1954. 75 p. illus., maps (part col.) 29 cm.
GDL Central Library Glendale History Room, Closed Stacks