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International networks
Kenzhaliyev B.K, Kassymova G.K
Satbayev University, Almaty, Kazakhstan
Umar S.A
Federal University Lafia, Nigeria
Hajer S.S
Elmergib University, Libya
Boukhris Imed
King Khalid University, Saudi Arabia
Raouf El-Mallawany
Menoufia University, Egypt
Boukhris Imed
Universit´e de Sfax, Tunisie
Naif Mohammed Al-Hada
Dezhou University, China
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