@book{71043,
	author = {Shahinaz Badr Eldin Youssef and Ahamed Elhosiney Aly , },
	title = {Study of inhalation therapy in copd patients / },
	publisher = {Shahinaz Badr Eldin Youssef , },
	year = {1997},
	address = {Cairo : },
	url = {http://172.23.153.220/th.pdf}
}