TY - RPRT TI - National Land Cover Database 2001 (NLCD01) Imperviousness Layer Tile 4, Southeast United States: IMPV01_4 AU - Michael Wieczorek AU - Andrew E. LaMotte PY - 2010 DO - 10.3133/ds587d UR - https://pubs.usgs.gov/publication/ds587D ID - ds587D ER -