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OUDE TECHNIEK IN NIEUWE HUIZEN In een middelgrote stad als Leiden valt goed af te lezen hoe de installatietechniek zich in de loop der eeuwen heeft ontwikkeld. Edwin Orsel, bouwhistoricus van de gemeente Leiden ging met IZ op pad en legde uit waarom oude installaties ook voor nieuwe generaties waarde hebben. Orsel houdt kantoor in […]