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R. G. Pearson has written:

'An ecological survey of selected rivers in Queensland' -- subject(s): Aquatic organisms, Effect of water pollution on, Environmental aspects, Freshwater productivity, Sugar factories, Waste disposal, Water quality bioassay

'Phytotoxicology background sampling in the city of Windsor: 1972-1986' -- subject(s): Soils, Phytotoxins, Trace element content, Plant diseases

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11y ago

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