TY  - RPRT
TI  - Variation of Nb-Ta, Zr-Hf, Th-U and K-Cs in two diabase-granophyre suites
AU  - D. Gottfried
AU  - L. P. Greenland
AU  - E.Y. Campbell
PY  - 1968
DO  - 10.1016/0016-7037(68)90059-8
UR  - https://pubs.usgs.gov/publication/70011475
ID  - 70011475
ER  -