TY  - RPRT
TI  - Preliminary map of the Precambrian geology of the south half of the Vulcan quadrangle, Dickinson County, Michigan
AU  - Richard W. Bayley
PY  - 1957
DO  - 10.3133/ofr5710
UR  - https://pubs.usgs.gov/publication/ofr5710
ID  - ofr5710
ER  -