When did French become official language of Quebec?

Related questions

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Tags

1. #quebecois
2. #introduced
3. #passed
4. #official
5. #government
6. #french
7. #vesque
8. #august
9. #premier
10. #first
11. #where
12. #known
13. #province
14. #parti
15. #charter
16. #language
17. #canada
18. #montreal
19. #quebec