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I. P. Pavlov showing an experiment on a dog in the amphitheatre of the Physiological Laboratory, Imperial Military Medical…
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I. P. Pavlov showing an experiment on a dog in the amphitheatre of the Physiological Laboratory, Imperial Military Medical Academy, St Petersburg. Photograph, 1904.

Original public domain image from Wellcome Collection

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I. P. Pavlov showing an experiment on a dog in the amphitheatre of the Physiological Laboratory, Imperial Military Medical Academy, St Petersburg. Photograph, 1904.

More