TY  - RPRT
TI  - Geologic maps showing outcrops of the Nonesuch shale from Calumet to Black River, Michigan
AU  - Walter S. White
AU  - James C. Wright
PY  - 1962
DO  - 10.3133/ofr62157
UR  - https://pubs.usgs.gov/publication/ofr62157
ID  - ofr62157
ER  -