Mineral aggregate study and geological inventory, southwestern region of Ontario
By: prepared by Proctor & Redfern Limited, Gartner Lee Associates Limited, for the Ontario Ministry of Natural Resources.
Contributors: Gartner Lee Associates.; Ontario. Ministry of Natural Resources.
Publisher: Proctor & Redfern Limited ; Gartner Lee Associates Limited
Published: 1977
Place of publication: Toronto
Language: eng
Number of pages: 106
Subjects: Mines and mineral resources -- Ontario.; Aggregates (Building materials)
Notes: Cover title.

Bibliography: p. 70-72.