Brown, T.L. and Merriam, L.C., Jr., (1970), "The Twin Cities Camper and the State Park Environment", Minnesota Forestry Research Notes 215, School of Forestry, University of Minnesota
Minnesota Forestry Research Notes
Published as Scientific Journal Paper Series No. 7226 of the Minnesota Agricultural Experiment Station.
Supported by McIntire-Stennis Cooperative Forestry Research Act Funds.
Brown, T.L.; Merriam, Lawrence C..
The Twin Cities Camper and the State Park Environment.
St. Paul, Minn. : School of Forestry, University of Minnesota.
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