TY  - RPRT
TI  - Rubidium-strontium dating of the trondhjemite of Rio Brazos, New Mexico and of the Kroenke Granodiorite, Colorado
AU  - Fred Barker
AU  - Z. E. Peterman
AU  - W.T. Henderson
AU  - R.E. Hildreth
PY  - 1974
UR  - https://pubs.usgs.gov/publication/70156516
ID  - 70156516
ER  -