Since 1994
ISSN
Online-ISSN: 2521-9200
Print-ISSN: 2708-8251



Copyright @2017. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted non-commercial used, distribution and reproduction in any medium
This work is licensed under a Creative Commons Attribution 4.0 International License.
If the any ads on paper, all ads submitted for publication must comply with applicable Libyan laws and Sebha University policy, which need to have an approval letter from Sebha University.
The accepted Advertisements to be on Sebha University Journals must comply with the relevant advertising specifications under Libyan Law.
Copyright of any accepted advertisements must be taken into account.
CC BY 4.0:
Articles can be read and shared under the following conditions:
• BY: Attribution must be given to the original source (Attribution)
Copyright © 2021