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ERA

ERA is an abbreviation for several different things, including:

This is a disambiguation page; that is, one that just points to other pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.



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Fencepost error

... people will immediately answer 10, which is incorrect. The fence certainly has 10 sections, but the posts lie at the boundaries of these section. We can consider each ...