@book{Komdeur-1992-3633,
  author = {Komdeur, J and Bertelsen, J and Cracknell, G},
  title = {Manual for Aeroplane and Ship Surveys of Waterfowl and Seabirds},
  publisher = {Wetlands International Indonesia Office},
  year = {1992},
  month = {dec},
  url = {https://www.nhbs.com/manual-for-aeroplane-and-ship-surveys-of-waterfowl-and-seabirds-book},
  keywords = {Birds, Seabirds, Waterfowl},
}