@conference {28833,
	title = {{\textquotedblleft}Recovery of Some Valuable Metals from Printed Circuit Boards Wastes{\textquotedblright}},
	booktitle = {Material Science and Material Engineering [MSME2014] },
	year = {2014},
	month = {14-16 March},
	address = {Chicago, USA},
	author = {Waheed A. Badawy and Ziad M. Khalifa}
}
