https://www.usgs.gov/publications/great-lakes-prey-fish-populations-a-cross-basin-overview-status-and-trends-based
The assessment of Great Lakes prey fish stocks have been conducted annually with bottom trawls since the 1970s by the Great Lakes Science Center, sometimes...
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https://www.thriftbooks.com/w/great-lakes-basin-american-association-for-the-advancement-of-science-no-71/16464568/
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