TY  - RPRT
TI  - Geology and Rb-Sr age of Precambrian W Puritan Quartz Monzonite, northern Michigan
AU  - P.K. Sims
AU  - Zell E. Peterman
AU  - W. C. Prinz
PY  - 1977
UR  - https://pubs.usgs.gov/publication/70233051
ID  - 70233051
ER  -