Protection of outdoor recreation values of rivers :
1978 Nationwide Outdoor Recreation Plan Task Force report.
Washington, D.C. : U.S. Dept. of the Interior, Heritage Conservation and Recreation Service, 
> Law and legislation
> United States.
Rivers > United States > Recreational use.
Conservation of natural resources > United States.
Outdoor recreation > Environmental aspects > United States.
38 p. in various pagings :
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