Author: Geological Survey of Canada / Subject: Gas fields - Yale University Library GeoBlacklight Search Results

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1. Essex County and parts of adjacent counties, southwestern Ontario ... showing structure contours drawn on top of the Norfolk and Guelph formations, and positions of wells drilled to obtain oil and natural gas / [cartographic material]

1945. 2012-06-28T12:55:24Z. 2012-07-05T13:04:26Z. Geological Survey of Canada. Geological Survey. English. Public. Ontario, Kent (County), and Essex (County).

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1. Essex County and parts of adjacent counties, southwestern Ontario ... showing structure contours drawn on top of the Norfolk and Guelph formations, and positions of wells drilled to obtain oil and natural gas / [cartographic material]

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