Slope stability study of the South Nation River and portions of the Ottawa River [cartographic material].
- NTS Reference: 31 G/2, 31 G/3, 31 G/4, 31 G/5, 31 G/6, 31 G/7, 31 G/10, 31 G/11, 31 G/12, 31 B/13, 31 B/14, 31 B/15. Relief shown by contours and spot heights. Originally issued with monograph of the same title. "Reference to this map be made in the following form. Poschmann, A.S. ... [et al.], Slope stability study of the South Nation River and portions of the Ottawa River ... Geotechnical Series, scale 1:50 000 compilation 1978, 1981."
- Ontario Geological Survey
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