TY - RPRT TI - Creation of a 30-meter land cover database for the conterminous United States—Accomplishments and future goals AU - Terry L. Sohl AU - James Vogelmann AU - B.K. Wylie AU - Charles R. Larson AU - J. Nicholas Van Driel PY - 1999 UR - https://pubs.usgs.gov/publication/70201861 ID - 70201861 ER -