TY  - RPRT
TI  - Insular and submarine ferromanganese mineralization of the Tonga-Lau region
AU  - J.R. Hein
AU  - M. S. Schulz
AU  - Jung-Keuk Kang
PY  - 1990
UR  - https://pubs.usgs.gov/publication/70015946
ID  - 70015946
ER  -