1995 study of island and shoreline recreational use in the federally managed portion of the Lower St. Croix National Scenic Riverway :
final report submitted to National Park Service, Denver Service Center, Midwest Field Area and St. Croix National Scenic Riverway /
by Mark R. Dalton, David W. Lime, Michael S. Lewis, and David G. Pitt.

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Limited (search only)   University of Minnesota