@book{68678,
	author = {Nermen Hefny Mohamed Hefny and Amal Said Farag , },
	title = {Separation of microcrystalling waxes for petrolatum production / },
	publisher = {Nermen Hefny Mohamed Hefny , },
	year = {2002},
	address = {Cairo : },
	url = {http://172.23.153.220/th.pdf}
}