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Gerhard Sperer
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GTR Haustechnik-GmbH
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Helmuth Maier
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HPD Planungsdienst- Technisches Buero fuer Gebaeudetechnik Ges.mbH
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Hydro-Ingenieure GmbH
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Ing. Anton Hock
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Ing. Dorothea Mueller
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Ing. Franz Waldsich
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Ing. Georg Kreminger
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Ing. Gerhard Seeber
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Ing. Guenter Kail
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Ing. Guenther Goetzenbrugger
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Ing. Josef Lukavsky
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Ing. Josef Schiner
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Ing. Leo Bucek
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Ing. Leo Riebenbauer
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Ing. Manfred Fischer
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Ing. Michael Benkoe
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Ing. Otto Ellinger
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Ing. Peter Dworak