@misc{indiciae9f2fb583cb04, title = {Study design and percent recoveries of anthropogenic organic compounds with and without the addition of ascorbic acid to preserve water samples containing free chlorine, 2004-06}, author = {Joshua F. Valder and Gregory C. Delzer and Curtis V. Price and Mark W. Sandstrom}, year = {2008}, doi = {10.3133/ofr20081226}, url = {https://pubs.usgs.gov/publication/ofr20081226}, note = {Source identifier: ofr20081226} }