Niagara-Welland, southern Ontario, Quaternary geology [cartographic material] / geology by B.H. Feenstra and assistants ... 1969-72 ; cartography by D. James ... 1983.
Map showing geological and boundary features, location map, legend. Relief shown by contours and spot heights. "NTS 30 M/3 and 30 M/6, 30 L/14, 30 L/15"
- Ontario Geological Survey
- Held by
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