NDR broadcast this in September 09. It is worth watching even if you can’t understand the language. There is a lot showing general concern about issues such as mercury content, recycling and effectiveness (or lack of!) of “energy saving” CFLs
NDR broadcast this in September 09. It is worth watching even if you can’t understand the language. There is a lot showing general concern about issues such as mercury content, recycling and effectiveness (or lack of!) of “energy saving” CFLs