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A battery-operated air sampler for remote areas. Las Vegas, Nev.: Environmental Monitoring and Support Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1979.
Visitation Behavior Patterns and Carrying Capacities in the Great Smoky Mountains National Park. Vol. M.A. Georgia State University, 1996.
Great Smoky Mountains Preliminary Study for Biosphere Reserve Pollutant Monitoring. Las Vegas, Nev. : Environmental Monitoring Systems Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Springfield, Va. : National Technical Information Service distributor , 1979.