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How to use a Seaqualizer fish descending device Module 2 Video 11
Katherine A. McHugh's research works Chicago Zoological Society, Illinois and other places
PDF) Testing Tackle Modifications and Fish Descender Tools for
Chetco River - Fish descending devices part II
Comparison of DMD treated to untreated hooks.
SeaQualizer Descending Device - Made in the USA
Page 18 – Island Fisherman Magazine
Randall WELLS, Chicago Zoological Society, Illinois, Sarasota Dolphin Research Program
Fish Descender Devices