Columbium (niobium) deposits of Ontario
By: by Stewart A. Ferguson.
Series: Mineral resources circular ;; 14
Publisher: Ontario Dept. of Mines and Northern Affairs
Published: 1971
Place of publication: [Toronto]
Language: eng
Number of pages: 58
Subjects: Niobium ores -- Ontario.
Notes: Bibliography: p. 54-56.
Includes index.