Edouard De Warren, Élisée Reclus, EHS (Format: EPUB)
Antoine Bréguet, Lazare Weiller, EHS (Format: EPUB)
Jules Rochard, Constant Vanlair, EHS (Format: EPUB)
J. Dujardin, Félicien De Saulcy, EHS (Format: EPUB)
Louis V. De Saint-Martin, EHS (Format: EPUB)