Water resources investigations of the U.S. Geological Survey Mid-Atlantic district, 1981-1983 / compiled by Daniel J. Phelan, Natalie R. Carrington, Gloria J. Hyatt
Water resources investigations of the U.S. Geological Survey Mid-Atlantic district, 1981-1983 / compiled by Daniel J. Phelan, Natalie R. Carrington, Gloria J. Hyatt