TY  - RPRT
TI  - Exploratory drilling for evidence of zinc and lead ore in Dubuque County, Iowa
AU  - A. E. Flint
AU  - C. Erwin Brown
PY  - 1956
DO  - 10.3133/b1027k
UR  - https://pubs.usgs.gov/publication/b1027K
ID  - b1027K
ER  -