Guidelines for Author: https://jwpr.science-line.com/index.php?option=com_content&view=article&id=5&Itemid=4
The e-mail Address: shakal2000@gmail.com
Guidelines for Author: https://jwpr.science-line.com/index.php?option=com_content&view=article&id=5&Itemid=4
The e-mail Address: shakal2000@gmail.com