presentation 2
the book that needs to get the info from https://www.dropbox.com/s/bleneku2a4foq1a/%D9%82%D8%A7%D9%86%D9%88%D9%86%20%D8%A3%D9%88%D8%B1%D8%A8%D9%8A%20-%20%D8%A7%D8%A8%D8%B1%D8%A7%D9%87%D9%8A%D9%85%20%D8%B9%D9%84%D9%8A%20%D8%A7%D9%84%D8%B4%D9%85%D8%B1%D9%8A.pdf?dl=0
