Evidence of enhanced atmospheric ammoniacal nitrogen in Hells Canyon national recreation area: Implications for natural and cultural resources

Geiser, L. H., A. R. Ingersoll, A. Bytnerowicz, and S. A. Copeland (2008), Evidence of enhanced atmospheric ammoniacal nitrogen in Hells Canyon national recreation area: Implications for natural and cultural resources, J. Air Waste Manage. Assoc., 58, 1223-1234.

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