TY - RPRT TI - Records of drill holes from drilling in Dubuque County, Iowa, by the U.S. Geological Survey, 1955 AU - C. Ervin Brown AU - Jesse W. Whitlow PY - 1956 DO - 10.3133/ofr5615 UR - https://pubs.usgs.gov/publication/ofr5615 ID - ofr5615 ER -