Original-map-by-John-Snow-(-physician-)-John-Sno -- Multiple sentences match

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Original map by John Snow ( physician ) | John Snow showing the Cluster ( epidemiology ) | clusters of cholera cases in the London epidemic of 1854

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Original map by John Snow ( physician ) | John Snow showing the cluster ( epidemiology ) | cluster s of cholera cases in the 1854 Broad Street cholera outbreak | London epidemic of 1854.

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