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This category is within the scope of WikiProject Chemistry, a collaborative effort to improve the coverage of
chemistry 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.ChemistryWikipedia:WikiProject ChemistryTemplate:WikiProject ChemistryChemistry articles
This category is within the scope of WikiProject Materials, a collaborative effort to improve the coverage of
Materials 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.MaterialsWikipedia:WikiProject MaterialsTemplate:WikiProject MaterialsMaterials articles
This category is within the scope of WikiProject Philosophy, a collaborative effort to improve the coverage of content related to
philosophy on Wikipedia. If you would like to support the project, please visit the project page, where you can get more details on how you can help, and where you can join the general discussion about philosophy content on Wikipedia.PhilosophyWikipedia:WikiProject PhilosophyTemplate:WikiProject PhilosophyPhilosophy articles
This category is within the scope of WikiProject Visual arts, a collaborative effort to improve the coverage of
visual arts 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.Visual artsWikipedia:WikiProject Visual artsTemplate:WikiProject Visual artsvisual arts articles