Clemens Peter Pirquet, Freiherr von Cesenatico: unveiling of his tomb. Photograph, 1930.

    Reference:
    13405i

    Licence: Public Domain Mark

    Credit: Clemens Peter Pirquet, Freiherr von Cesenatico: unveiling of his tomb. Photograph, 1930. Wellcome Collection. Source: Wellcome Collection.

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