"1977-07-27Z"^^ . . . . . "1898-07-23Z"^^ . . "American economist" . "Marschak, Jacob"@en . . . "1977Z"^^ . . . . "Jacob Marschak (23 July 1898 \u2013 27 July 1977) was a Ukrainian-American economist, known as \"the Father of Econometrics\"."@en . . . "1898Z"^^ . . "Jacob Marschak"@en .