Leal, J. L. (1898). An Outbreak of Typhoid Fever Due to an Infected Public Water Supply.
Styl ChicagoLeal, John L. An Outbreak of Typhoid Fever Due to an Infected Public Water Supply. 1898.
Citace podle MLALeal, John L. An Outbreak of Typhoid Fever Due to an Infected Public Water Supply. 1898.
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