@book{3450,
	author = {Jorgensen, Sven Erik. and Johnsen.},
	title = {Principles of environmental science and technology},
	publisher = {Elsevier,},
	year = {1989},
	series = {Studies in environment science, 33},
	address = {Amsterdan :},
	edition = {2 ed.},
	note = {D50-18}
}