@book{6050,
	title = {Ground water in western and central Europe },
	publisher = {United Nations},
	year = {1991 },
	address = {New York},
	note = {e------ United Nations Department of Technical Co-operation for Development 363 p. : ill., maps ; 28 cm. "ST/TCD/12." "United Nations publication sales no. E.90.II.A.25"--T.p. verso Includes bibliographical references NHAH }
}