Die diesjährige Vorexkursion am Freitag, 24.9., führte die SGHB zuerst in die Eisenbibliothek und anschliessend in die Stahlgiesserei Mühlental.
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Die diesjährige Vorexkursion am Freitag, 24.9., führte die SGHB zuerst in die Eisenbibliothek und anschliessend in die Stahlgiesserei Mühlental.