@misc{indiciaea1d226dc984e,
  title = {Hydrographic data from the OPTOMA Program : OPTOMA12, 8-18 October 1984, OPTOMA13, 22 October-3 November 1984, OPTOMA13P, 27 October 1984, OPTOMA14, 3-14 November 1984 — Illustration, Page 21},
  year = {1985},
  url = {https://www.biodiversitylibrary.org/page/41189110},
  note = {Source identifier: page-41189110}
}