TY  - RPRT
TI  - The isotopic composition of lead in potassium feldspars from some 1.0-b.y. old North American igneous rocks
AU  - R. E. Zartman
AU  - G.J. Wasserburg
PY  - 1969
DO  - 10.1016/0016-7037(69)90104-5
UR  - https://pubs.usgs.gov/publication/70011675
ID  - 70011675
ER  -