@misc{indiciae838088b7af8e, title = {Comparison of methods for the removal of organic carbon and extraction of chromium, iron and manganese from an estuarine sediment standard and sediment from the Calcasieu River estuary, Louisiana, U.S.A.}, author = {N.S. Simon and S.A. Hatcher and C. Demas}, year = {1992}, doi = {10.1016/0009-2541(92)90111-h}, url = {https://pubs.usgs.gov/publication/70017245}, note = {Source identifier: 70017245} }