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Stream measurements --- Androscoggin River (N.H. and Me.) --- United States
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Stream measurements --- Stream measurements. --- Androscoggin River (N.H. and Me.) --- United States
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Stream measurements --- Water --- Water quality --- Aeration --- Measurement. --- Massachusetts. --- New York (State)
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Stream self-purification --- Rivers --- Rivers --- Mathematical models. --- Aeration --- Measurement. --- Massachusetts.
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Habitat (Ecology) --- Stream measurements --- Fish communities
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