TY  - RPRT
TI  - Nitric acid dry deposition to conifer forests: Niwot Ridge spruce-fir-pine study
AU  - H. Sievering
AU  - T. Kelly
AU  - G. McConville
AU  - C. Seibold
AU  - A. Turnipseed
PY  - 2001
DO  - 10.1016/s1352-2310(01)00156-x
UR  - https://pubs.usgs.gov/publication/70023330
ID  - 70023330
ER  -