TY  - RPRT
TI  - Sm-Nd systematics of a tonalitic augen gneiss and its constituent minerals from northern Michigan
AU  - K. Futa
PY  - 1981
DO  - 10.1016/0016-7037(81)90148-4
UR  - https://pubs.usgs.gov/publication/70012018
ID  - 70012018
ER  -