TY  - RPRT
TI  - Pre-Cambrian rocks of the Lake Superior region: A review of newly discovered geologic features, with a revised geologic map
AU  - C. K. Leith
AU  - R. J. Lund
AU  - Andrew Leith
PY  - 1935
DO  - 10.3133/pp184
UR  - https://pubs.usgs.gov/publication/pp184
ID  - pp184
ER  -