Richarz, C., Schulz, C., & Zeitler, F. (2007). Energy-efficiency upgrades: Principles, details, examples (First edition.). Birkhäuser ; Edition Detail.
Tohutoru Kātū Chicago (17th ed.)Richarz, Clemens, Christina Schulz, me Friedemann Zeitler. Energy-efficiency Upgrades: Principles, Details, Examples. First edition. Basel : Munich: Birkhäuser ; Edition Detail, 2007.
Tohutoro MLA (9th ed.)Richarz, Clemens, et al. Energy-efficiency Upgrades: Principles, Details, Examples. First edition. Birkhäuser ; Edition Detail, 2007.
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