TY  - RPRT
TI  - Phosphates in some Missouri refractory clays
AU  - Robert B. Halley
AU  - Eugene E. Foord
AU  - David J. Keller
AU  - Walter D. Keller
PY  - 2024
DO  - 10.1346/ccmn.1997.0450306
UR  - https://pubs.usgs.gov/publication/70019210
ID  - 70019210
ER  -