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Keywords from Image Description:
FMIB mussel Quadrula ebenus marsupium occupying all four gills.jpeg mussel Quadrula ebenus marsupium occupying all four gills Subject Freshwater Mussels Quadrula Tag Shellfish Cite book Natural History and Propagation of FreshWater Mussels Bulletin of the United States Bureau of Fisheries vol Coker Shira Clark Walton Howard Washington