TY - RPRT TI - Water-quality and amphibian population data for Maryland, Washington, D.C., and Virginia, 2001-2004 AU - Karen C. Rice AU - Robin E. Jung PY - 2004 DO - 10.3133/ofr20041401 UR - https://pubs.usgs.gov/publication/ofr20041401 ID - ofr20041401 ER -