. Acute and chronic toxicity to zooplankton of pure pentachlorophenol and a technical formulation : laboratory and field studies. Aquatic animals; Pentachlorophenol; Pentachlorophenol. S*. 32. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stephenson, Gladys L. (Gladys Lorraine), 1954-; Kaushik, N. K; Ontario. Ministry of the Environment. [Toronto] : Queen's Printer for Ontario

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