@book{6077,
	title = {Rational use of water and its treatment in the chemical industry },
	publisher = {United Nations},
	year = {1991 },
	note = {146 p. : ill. ; 30 cm. At head of title: Economic Commission for Europe, Geneva "ECE/CHEM/78." "United Nations publication sales no. E.91.II.E.3"--T.p. verso NHAH }
}