This category is within the scope of WikiProject Glass, a collaborative effort to improve the coverage of glass on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.GlassWikipedia:WikiProject Physics/Taskforces/GlassTemplate:WikiProject Glassglass articles
This category is within the scope of WikiProject History, a collaborative effort to improve the coverage of the subject of History on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.HistoryWikipedia:WikiProject HistoryTemplate:WikiProject Historyhistory articles
