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Vezzini, Andrea; Engelmann, Danilo (July 2020). Saubere Primärenergie entscheidet Swiss Engineering STZ, Juli/A, pp. 30-32.
Vezzini, Andrea; Engelmann, Danilo (July 2020). Saubere Primärenergie entscheidet Swiss Engineering STZ, Juli/A, pp. 30-32.