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. Author manuscript; available in PMC: 2021 Aug 1.
Published in final edited form as: Environ Sci Pollut Res Int. 2020 May 28;27(24):30542–30557. doi: 10.1007/s11356-020-09257-3

Figure 1.

Figure 1

Study area map showing administrative agencies, AUMs, and airports within the Navajo Nation, located in the southwest United States. Agencies are numbered as 1) Western, 2) Northern, 3) Central, 4) Eastern, and 5) Ft. Defiance