Wetmore CM. Lichens and air quality in Pictured Rocks National Lakeshore. Final Report. 1988:1-38
1 PDF computer file (25 pages; 1 picture plus 2 pages of tabular data and 14 pages of maps)
National Park Service
Contract CX 0001-2-0034
Wetmore, Clifford M..
Lichens and air quality in Pictured Rocks National Lakeshore: Final report.
Retrieved from the University of Minnesota Digital Conservancy,
Content distributed via the University of Minnesota's Digital Conservancy may be subject to additional license and use restrictions applied by the depositor.