Geochemistry of niobium and tantalum /

Bibliographic Details

Main Authors:	Parker, Raymond L. (Raymond Laurence), Fleischer, Michael, 1908-1998 (Author)
Format:	Government Document Book
Language:	English
Published:	Washington : U.S. Govt. Print. Off, 1968.
Series:	Geological Survey professional paper ; 612.
Subjects:	Niobium. Tantalum.