@misc{indiciaec67d9ab8e2c8,
  title = {Blue-sac disease of fish (also known as dropsy, yolk sac disease, and Hydrocoele embryonalis)},
  author = {Ken Wolf},
  year = {1969},
  url = {https://pubs.usgs.gov/publication/fdl15},
  note = {Source identifier: fdl15}
}