Author: Wilson, M. E. / Access: Public - Yale University Library GeoBlacklight Search Results

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1. Geology, Perth, Lanark and Leeds Counties, Ontario [cartographic material]

1961. 2012-08-30T19:10:47Z. 2013-03-18T20:21:53Z. Wilson, M. E. The Survey. English. Public. Ontario, Perth Region, Leeds (County), and Lanark (County).

2. Marmora, Hastings, Peterborough, and Northumberland Counties, Ontario [cartographic material]

1940. 2012-06-07T12:54:29Z. 2012-06-13T15:05:02Z. Wilson, M. E. The Survey. English. Public. Ontario, Marmora Region, Hastings (County), Peterborough (County), and Northumberland (County).

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