. . "1999Z"^^ . . . . . "Fritz Leonhardt"@en . . "Leonhardt, Fritz"@en . . "1909Z"^^ . . . . "1909-07-12Z"^^ . "German engineer" . . . "1999-12-30Z"^^ . . "Fritz Leonhardt (12 July 1909 \u2013 30 December 1999) was a German structural engineer who made major contributions to 20th-century bridge engineering, especially in the development of cable-stayed bridges. His book Bridges: Aesthetics and Design is well known throughout the bridge engineering community."@en .