@book{57270,
	author = {محمود عاطف البنا},
	title = {العقود الإدارية :},
	publisher = {دار العلوم ،},
	year = {1984 .},
	address = {الرياض :},
	edition = {الطبعة الأولى},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/B07-03024.pdf}
}