Wetmore, Clifford M.2014-07-092014-07-091987-06Wetmore CM. Lichens and air quality in Saguaro National Monument with chemical analysis of Chiricahua Lichens. Final Report. 1987:1-36.https://hdl.handle.net/11299/1638371 PDF computer file (31 pages plus 2 pages tabular data; 6 maps)en-USLichensAir qualityReport