TY  - RPRT
TI  - X-ray fluorescence determination of titanium in geological materials
AU  - A.E. Hubert
AU  - T. T. Chao
PY  - 1977
DO  - 10.1016/s0003-2670(01)84587-6
UR  - https://pubs.usgs.gov/publication/70010408
ID  - 70010408
ER  -