@book{15626,
	author = {Abdelrhman Mohamed Aziz Hussen  and Mohamed Abdelrhman Merdan , },
	title = {Comparative microscopic evaluation of the root canals prepared by hand, sonic and ultrasonic instrumentation / },
	publisher = {Abdelrhman Mohamed Aziz Hussen , },
	year = {1994},
	address = {Cairo : },
	url = {http://172.23.153.220/th.pdf}
}