Federal Inventory of Swiss heritage sites of national importance ISOS Friday January 8th, 2021 / Raimund Schnürer / No Comments
Earthquakes worldwide: heavy earthquakes (magnitude 5.0+) Friday January 8th, 2021 / Raimund Schnürer / No Comments
Hydro power plants: water volume required and pump efficiency Friday January 8th, 2021 / Raimund Schnürer / No Comments
Ski resorts in Switzerland and neighbouring areas Friday September 11th, 2020 / Raimund Schnürer / No Comments
