@book{61348,
	author = {عبدالرحمن توفيق and بميك},
	title = {الوصف الوظيفى و اعداد الهياكل /},
	publisher = {ببميك ،},
	year = {2008 .},
	address = {القاهرة :},
	edition = {ط2}
}