I. P. Pavlov talking in an operating room at his laboratory
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: I. P. Pavlov talking in an operating room at his laboratory. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: I. P. Pavlov talking in an operating room at his laboratory. Wellcome Collection. Source: Wellcome Collection.