File:Freiflächenheizung Flughafen Zürich 1972.jpg

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摘要

描述	Deutsch: Einbau der MULTIBETON-Freiflächenheizung auf 2 x 16000 m² auf dem Flughafen Zürich-Kloten 1972
日期	1972年
来源	Archiv Multibeton GmbH
作者	Artus Feist

许可协议

This photograph of a three-dimensional object is in the public domain in Switzerland (Art. 29 par. 2^bis of the CopA), because the photographic depiction was created at least 50 years ago and the reproduction has no individual character.

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A photograph without an individual character uses the creative freedom neither in terms of photo technology nor in conceptual terms, but does not stand out from the generally accepted.
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