The speech of the head of the renewable energy and new technologies department at the opening ceremony of the new academic year 2021-2022.
![](http://www.hns-re2sd.dz/wp-content/uploads/2021/09/Bahloul-Derradji.png)
The speech of the head of the renewable energy and new technologies department at the opening ceremony of the new academic year 2021-2022.
Higher National School of Renewable Energies, Environment & Sustainable Development
Constantine road, Fesdis, Batna 05078, Algeria.
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