Description: Preliminary geology map. 1:20,000 scale.; see accompanying summary paper: Geology of Early Proterozoic Gneissic Rocks, Black Birch Lake Area: Progress Report 2. AVAILABLE AS A FREE DOWNLOAD; 1989 Author(s) Orrell,S.

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• Summary of Investigations 1989, Saskatchewan Geological Survey; Misc. Rep. 89-4

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