TY  - RPRT
TI  - Lake Superior geological and geophysical data sources
AU  - R. J. Wold
AU  - D. R. Hutchinson
PY  - 1979
DO  - 10.3133/mf1085
UR  - https://pubs.usgs.gov/publication/mf1085
ID  - mf1085
ER  -