Recovery of tungsten from a hydrothermally altered deposit /
by A.E. Raddatz ... [et al.].
- [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1982.
- 14 p. : ill. ; 28 cm.
- Report of investigations ; 8720 .
- Report of investigations (United States. Bureau of Mines) ; 8720. .