Subject: Tunnels / Spatial Coverage: Saint Paul - Yale University Library GeoBlacklight Search Results

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1. Geologic and hydrologic aspects of tunneling in the Twin Cities area, Minnesota [cartographic material]

1979. 2014-09-10T20:08:28Z. 2014-09-23T22:10:35Z. Minnesota Geological Survey. Dept. of the Interior, U.S. Geological Survey. English. Public. Minnesota, Minneapolis, and Saint Paul.

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1. Geologic and hydrologic aspects of tunneling in the Twin Cities area, Minnesota [cartographic material]

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