This is a maintenance category, used for maintenance of the Wikipedia project. It is not part of the encyclopedia and contains non-article pages, or groups articles by status rather than subject. Do not include this category in content categories.
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The following articles have infoboxes with 'no date' entered in the
date field (date of speakers estimation). This prevents the obsolescence calculation. It should be done when the reference for the population figure does not supply a date; this is fairly common with Ethnologue.