How do I reference the publication date or "date modified" of a publication within a topic in the publication

Before we started converting to Tridion Docs, is was standard for us to include the part number, version number, and date of publication at the bottom of the cover of a publication.

I can put these values in a library topic and reference them as variables, but I think it would be better to reference the document properties to get values that will update automatically when if a new version is released.

I don't currently know how to access those properties within a topic.

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