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![2nd Interagency Workshop On In-situ Water-quality Sensing: Biological Sensors, Pensacola Beach, Florida, April 28-30, 1980 / Sponsors: Environmental Protection Agency ... [et Al.]](/publice/covers_cache_jpg/21/2/b/4/16bcd8bc602b4701264eea470ac9be29.jpg.jpg "2nd Interagency Workshop On In-situ Water-quality Sensing: Biological Sensors, Pensacola Beach, Florida, April 28-30, 1980 / Sponsors: Environmental Protection Agency ... [et Al.]")
