This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
FMIB Perspective sketch of Richardson filter.jpeg check categories August Perspective sketch of Richardson filter Subject Fish hatcheriesEquipment and supplies Tag Hatcheries Cite book Karluk Hatchery Fassett Harry Clifford Washington DC Government Printing Office Bulletin of the United States Fish Commission vol Creator