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Lazzaro Spallanzani
LKO22A01_305

Lazzaro Spallanzani

Croup vaccine by the Dr Roux
LKO09A01_188

Croup vaccine by the Dr Roux

Man observing the cathodic light spectrum
LKO09A00_249

Man observing the cathodic light spectrum

Studies on diphteria in a laboratory
LKO09A00_014

Studies on diphteria in a laboratory