![](http://www.alamy.com/thumbs/6/F1518B6B-24DF-4FA1-8F23-D29E0CB43941/2F79PK5.jpg)
Electric machines. From the installation of luma light tubes in the second chamber of the Riksdag. From V Engineer Hyström, Luma, Mr Beckman, Rikstad Hall and engineer Schröder, Luma.
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Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
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