female ecologist epidemiologist points excellent urban water quality |
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navigate by keyword : canal channel city cityscape clean compliance conditions control drinkable drinking ecologist ecology environment environmental epidemiologist favorable female fit for fresh intake looking microbiologist pond quality research reservoir river sample sanitary standards suitable supervision supply test tube urban use water woman |
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Female ecologist or epidemiologist gestures for excellent quality of city water, holding a flask in one hand, against the background of a river flowing among city blocks |
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