In 1854, London physician Dr. John Snow mapped the spatial relationship between deaths from the waterborne disease cholera and the locations of water pumps which brought in water directly from tunnels connected to the River Thames. From Snow’s research it was determined that a public water pump had been contaminated by sewage.
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Geography, 23.06.2019 03:30, rosezgomez97
Residents of moldova are mainly a. russian b. ukrainian c. serbian d. romanian the answer is d. romanian
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In 1854, London physician Dr. John Snow mapped the spatial relationship between deaths from the wate...
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