Reactive Nitrogen Composition and Origin in the United States Rocky Mountains
Bret A. Schichtel, National Park Service, Fort Collins, CO; and K. B. Benedict, W. C. Malm, A. J. Prenni, T. M. Thompson, M. G. Barna, K. A. Gebhart, D. Day, M. A. Rodriguez, E. J. T. Levin, J. L. Collett Jr., and S. M. Kreidenweis