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Planende Ingenieure Helmut Sperl

Berliner Ingenieurbüro (pin), belegt 1987 in Zusammenhang mit der IBA

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Dokumentation: Neuere Untersuchungen energiesparende und emissionsärmere Heizung
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Written Planende Ingenieure Helmut Sperl
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Written
1987
1986 1988
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