An diofar eadar na mùthaidhean a rinneadh air "1640an"

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b robot Adding: kv:1640-ӧд вояс
Loidhne 46:
[[ko:1640년대]]
[[ksh:1640-er Joohre]]
[[kv:1640-ӧд вояс]]
[[la:Decennium 165]]
[[lt:XVII amžiaus 5-as dešimtmetis]]