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Keywords from Image Description:
EPITHELIUM GILL COVERING OF CHANNEL CATFISH DAMAGED BY EXPOSURE TO METHYL MERCURIC CHLORIDE IN THE WATER. CAMERA... NARA . Scope and content General notes Local identifier DA Environmental Protection Agency NARAAuthor Emmerich Donald Photographer File EPITHELIUM GILLCOVERING OFACHANNELCATFISHDAMAGEDBYEXPOSURETOMETHYLMERCURICCHLORIDEINTHEWATER