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Photograph of Ivan Pavlov
ARP23A18_014

Photograph of Ivan Pavlov

Photograph of Ivan Pavlov
ARP23A18_015

Photograph of Ivan Pavlov

Photograph of Ivan Pavlov
ARP23A18_013

Photograph of Ivan Pavlov

Photograph of the upper part of the laboratory building in Koltushy, with Pavlov's motto "Observation and again Observation"
ARP23A18_016

Photograph of the upper part of the laboratory bui...