An unexpected treasure: 1700 handwritten pages of information on XIXth century earthquakes
1700 handwritten pages of information on XIXth century earthquakes, this is the unexpected treasure discovered by scientists of the Royal Observatory of Belgium and the Cologne University in the record-office of Duisburg (Germany).
The original documents covering the German, Belgian and Dutch border region include letters and most astonishingly formal macroseismic questionnaires of the Prussian authorities that have not been used [...]