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- 75310481 contributor B2643457.
- 75310481 contributor B2643458.
- 75310481 created "1974.".
- 75310481 date "1974".
- 75310481 date "1974.".
- 75310481 dateCopyrighted "1974.".
- 75310481 description "Includes bibliographical references.".
- 75310481 extent "114 p. in various pagings, [34] leaves of plates :".
- 75310481 issued "1974".
- 75310481 issued "1974.".
- 75310481 language "eng".
- 75310481 publisher "Toronto : Ministry of Natural Resources,".
- 75310481 spatial "Ontario.".
- 75310481 subject "333.8/5".
- 75310481 subject "Aggregates (Building materials) Ontario.".
- 75310481 subject "TN939 .P74 1974".
- 75310481 title "Mineral aggregate study of the Central Ontario Planning Region / Prepared for the Ontario Ministry of Natural Resources by Proctor and Redfern Ltd., Consulting Engineers and Planners.".
- 75310481 type "text".