TY - RPRT TI - Water-table, surface-drainage, and engineering soils map of the Frederica area, Delaware AU - Christian F. Davis AU - Durward H. Boggess AU - O. J. Coskery PY - 1965 DO - 10.3133/ha140 UR - https://pubs.usgs.gov/publication/ha140 ID - ha140 ER -