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Keywords from Image Description:
Jan opuszaski engineer. Jan opuszaski Polish engineer professor of Technical University of Lww Jan opuszaski polski inynier hydrotechnik profesor rektor Politechniki Lwowskiej minister robt publicznych audiovis nac gov pl Narodowe Archiwum Cyfrowe taken from archive Koncern Ilustrowany Kurier Codzienny Archiwum Ilustracji