@misc{indiciae7f9ca4f0a8b3, title = {External quality-assurance results for the national atmospheric deposition program/national trends network, 2000-2001}, author = {Gregory A. Wetherbee and Natalie E. Latysh and John D. Gordon}, year = {2004}, doi = {10.3133/sir20045034}, url = {https://pubs.usgs.gov/publication/sir20045034}, note = {Source identifier: sir20045034} }