TY  - RPRT
TI  - Chemical analyses and C.I.P.W. norms of nineteen volcanic rocks of the Ironwood area, Michigan
AU  - Howard Arthur Hubbard
PY  - 1975
DO  - 10.3133/ofr75145
UR  - https://pubs.usgs.gov/publication/ofr75145
ID  - ofr75145
ER  -