@misc{indiciae1c8b9ba72c22, title = {Preliminary analyses for perchlorate in selected natural materials and their derivative products}, author = {G. J. Orris and G. J. Harvey and D. T. Tsui and J. E. Eldrige}, year = {2003}, doi = {10.3133/ofr03314}, url = {https://pubs.usgs.gov/publication/ofr03314}, note = {Source identifier: ofr03314} }