"1966-07-21Z"^^ . "Philipp Frank (March 20, 1884, Vienna, Austria-Hungary \u2013 July 21, 1966, Cambridge, Massachusetts, USA) was a physicist, mathematician and also an influential philosopher during the first half of the 20th century. He was a logical-positivist, and a member of the Vienna Circle. He was influenced by Mach and was one of the Machists criticised by Lenin in Materialism and Empirio-criticism."@en . "1966Z"^^ . "Frank, Philipp"@en . "Austrian academic" . "1884-03-20Z"^^ . "1884Z"^^ .