An diofar eadar na mùthaidhean a rinneadh air "520an"

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b r2.7.1) (Robot: Adding war:520 nga dekada
b r2.7.1) (Robot: Adding sh:520-e
Loidhne 62:
[[ru:520-е]]
[[scn:520ini]]
[[sh:520-e]]
[[sk:20. roky 6. storočia]]
[[sl:520.]]