Robert Koch (1843-1910), German Bacteriologist 2.10 F — Andorre, 1982
Robert Koch (1843-1910), German Bacteriologist (Andorre, 1982), valeur faciale 2.10 F, série « Centenary of the Discovery of the Tuberculosis Bacillus »…
Série
Centenary of the Discovery of the Tuberculosis Bacillus