@book{62408,
	author = {Hossam Mahmoued Elsayed  and Ahmad Mohammed Helmi , },
	title = {Vortex dredging in aquatic environments / },
	publisher = {Hossam Mahmoued Elsayed , },
	year = {2016},
	address = {Cairo : },
	url = {http://172.23.153.220/th.pdf}
}