@book{30251,
	author = {Imhoff, Karl, and Fair, Gordon Maskew,},
	title = {Sewage treatment},
	publisher = {Wiley},
	year = {[1956]},
	address = {New York,},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0607/56011025-d.html}
}