Industrial minerals in Ontario.
Contributors: Ontario. Ministry of Northern Development and Mines.; Canada-Ontario Mineral Development Agreement.
Publisher: Ontario Ministry of Northern Development and Mines
Published: 1980
Place of publication: [Toronto?]
Language: eng
Subjects: Industrial minerals -- Ontario.
Other titles: Minéraux industriels en Ontario.
Notes: English and French, French on inverted pages.

On cover: Canada Ontario Mineral Development Exploitation Minérale.

Cover title.

Added title in French: Minéraux industriels en Ontario.