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The Child's Book of Nature
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Worthington Hooker
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Recreation, Water and Land
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Bernard John Dangerfield
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Aquatics
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Ruth Sova
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Weather
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Bruce Wilson Atkinson
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Water
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William Coles-Finch
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Northeastern Geology and Environmental Sciences
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Wet and Wild Water
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Opinions
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Illinois. Pollution Control Board
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Report of the Working Party on Water Safety
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Great Britain. Working Party on Water Safety
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Information Plus
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