@misc{indiciae0766e2c4c1b1,
  title = {Otter trawl explorations in Philippine waters},
  author = {Herbert E. Warfel and Porfirio R. Manacop},
  year = {1951},
  url = {https://pubs.usgs.gov/publication/rr25},
  note = {Source identifier: rr25}
}