By G. Sanglerat. [Translated from the French by G. Gendarme] by P. Grivet ; translated from the French by P.W. Hawkes. J. L. Lions and E. Magenes. Translated from the French by P. Kenneth. J. L. Lions, E. Magenes ; Translated from the French by P. Kenneth. Yves Rocard ; translated from the French by M.L. Meyer. J.M.G. Le Clézio ; translated from the French by Daphne Woodward. by Romain Rolland ; translated from the French by Gilbert Cannan. K. Zinner ; translated from the German by G. Winkler. Translated from the French by J. Potter. [Translated from the French by G.M. Temmer].