Search U.S. government technical reports digitized or harvested by TRAIL.
Monazite sand
The rare alkalis in New England
Technological and economic problems of rare-earth metal and thorium resources in Colorado, New Mexico, and Wyoming
The rare-earth elements, yttrium, and thorium;a materials survey,
The economics of byproduct metals(in two parts). 2. Lead, zinc, uranium, rare-earth, iron, aluminum, titanium, and lithium systems / by Alfred Petrick, Jr., Harold J. Bennett, Karl E. Starch, and Robert C. Weisner.