Descrizione : FDC. 3 covers (Houston, Washington and Pasadena post stamps) celebrating Hungarian-American mathematician, aerospace engineer and physicist who was active primarily in the fields of aeronautics and astronautics. He is responsible for many key advances in aerodynamics, notably his work on supersonic and hypersonic airflow characterization. He is regarded as the outstanding aerodynamic theoretician of the twentieth century.

USA 2302 L - image retouchée ?

Pagina : future · Ref: USA 2302 L

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THEODORE VON KARMAN