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Subject
- 443 Ouargla
- 190 Algeria
- 185 Algérie
- 168 الجزائر
- 165 Sahara
- 143 ورقلة
- 103 performance
- 87 pollution
- 71 المؤسسات الصغيرة والمتوسطة
- 66 modélisation
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- 21349 2010 - 2019
- 858 2000 - 2009
- 25 1992 - 1999