@book{3072,
	author = {Khalid Mabrook Gaber and Dalia Nabil Elbokle , },
	title = {Evaluation of pterygoid orbital plane as a horizontal reference in natural head lateral cephalograms / },
	publisher = {Khalid Mabrook Gaber , },
	year = {2007},
	address = {Cairo : },
	url = {http://172.23.153.220/th.pdf}
}