Posibilidad de que se trasmita la sífilis por la vacuna contra la viruela (sífilis vacunal) : y medios de evitarla / por Valentin Rojas.

In copyright

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Posibilidad de que se trasmita la sífilis por la vacuna contra la viruela (sífilis vacunal) : y medios de evitarla / por Valentin Rojas. In copyright. Source: Wellcome Collection.