TY  - RPRT
TI  - Geochemistry of a Tertiary sedimentary phosphate deposit: Baja California Sur, Mexico
AU  - D.Z. Piper
PY  - 1991
DO  - 10.1016/0009-2541(91)90075-3
UR  - https://pubs.usgs.gov/publication/70016478
ID  - 70016478
ER  -