TY - RPRT TI - Experimental engineering-geologic and environmental-geologic maps of the conterminous United States AU - Dorothy H. Radbruch-Hall AU - Kathleen Edwards AU - Raymond M. Batson PY - 1987 DO - 10.3133/b1610 UR - https://pubs.usgs.gov/publication/b1610 ID - b1610 ER -