Margaret Ringenberg died on 2008-07-28.
Margaret Ringenberg was born on 1921-06-17.
Jason Ringenberg was born in 1958.
Georg Ringenberg has written: 'Ein Beitrag zur Beurteilung von Grosszahlerscheinungen in der Arbeitswissenschaft mit Hilfe quantitativer Methoden' -- subject(s): Probabilities, Time study
Margaret Peden died in 1981.
Margaret Gast died in 1968.
Margaret Gray died in 2010.
Margaret Fishback died in 1985.
Margaret Fountaine died in 1940.
Margaret Levyns died in 1975.
Margaret Mather died in 1898.
Margaret Simey died in 2004.
Margaret Thorn died in 1969.