@misc{indiciae1f47dc4b6558,
  title = {Sidescan sonar examination of deteriorated revetments and bulkheads along Chicago's lake front},
  author = {Michael J. Chrzastowski},
  year = {1989},
  url = {https://pubs.usgs.gov/publication/70015360},
  note = {Source identifier: 70015360}
}