@misc{indiciae767716c821b0,
  title = {Nautical chart manual : practical guidance for cartographers and engineers engaged in constructing and revising nautical charts emphasizing details of current practices as developed by the Coast and Geodetic Survey — Illustration, BHL page 26988083},
  year = {1963},
  url = {https://www.biodiversitylibrary.org/page/26988083},
  note = {Source identifier: page-26988083}
}