Hans Kelsen (1881–1973), Law, constitutional and international law, legal theory, around 1930 Source https://commons.wikimedia.org/wiki/File:Hans_Kelsen_(1881%E2%80%931973)… Type photography
_~1930_%C2%A9_Georg_Fayer_(1892%E2%80%931950)_OeNB_8026867.jpg){kind=link}