Robert T. Siegel was born in 1928.
Robert Siegel was born in 1947.
Robert Siegel - author - was born in 1939.
Robert A. Siegel was born on 1913-01-01.
Hans Riegel has not died. He is still alive.
Robert Siegel Architects was created in 1991.
Robert A. Siegel died on 1993-12-03.
Robert Siegel has written: 'Thermal radiation heat transfer [by] Robert Siegel [and] John R. Howell' -- subject(s): Heat, Materials, Radiation and absorption, Thermal properties, Transmission
Isaac Siegel was born in 1880.
Kip Siegel was born in 1923.
Mark Siegel was born in 1967.
Jules Siegel was born in 1935.
Wayne Siegel was born in 1953.