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1by Proschwitz Gunnar von
Slatkine 1981Thesis -
2by Proschwitz Gunnar von, Beaumarchais Pierre-Augustin Caron de, Proschwitz Mavis von
The Voltaire Foundation 1990Book -
3by Voltaire
Voltaire Foundation 1996Book -
4by Beaumarchais Pierre-Augustin Caron de
M. de Maule 2005Book