What is ABBA's biggest selling single?

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Tags

1. #worldwide
2. #studio
3. #albums
4. #greatest
5. #dancing
6. #album
7. #queen
8. #being
9. #copies
10. #compilation
11. #arrival
12. #fernando
13. #million
14. #their
15. #popular
16. #sales
17. #become
18. #biggest
19. #singles