TY  - RPRT
TI  - Carbonatite tuffs in the Laetolil Beds of Tanzania and the Kaiserstuhl in Germany
AU  - R. L. Hay
AU  - J. R. O’Neil
PY  - 1983
DO  - 10.1007/bf00399717
UR  - https://pubs.usgs.gov/publication/70011442
ID  - 70011442
ER  -