skos:altLabel | - protective
- free
- copying
- upload
- by-nc-sa
- CopyLEFT
- Copyleft (reciprocal)
- Copyleft licenses
- Copyleft movement
- Copyleft symbol
- Copyleft#Strong_and_weak_copyleft
- Copyleft#Symbol
- copy left
- copy-left
- copyleft
- copyleft Licenses
- copyleft licenses
- copyleft software
- free and open license
- free redistribution
- independently for free
- non-copyleft
- share-friendly license
- strong copyleft
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