@misc{indiciaeab197faf6de8, title = {Use of an acoustic ranging system to monitor sediment deposition and erosion for the protection of an endangered mussel below the Olmsted Locks and Dam, Illinois}, author = {Michael S. Griffin}, year = {1997}, doi = {10.3133/fs12797}, url = {https://pubs.usgs.gov/publication/fs12797}, note = {Source identifier: fs12797} }