TY  - RPRT
TI  - Precambrian to modern manganese mineralization: Changes in ore type and depositional environment
AU  - Keith Nicholson
AU  - James R. Hein
AU  - Bernhard Buhn
AU  - Somnath Dasgupta
PY  - 1996
DO  - 10.1144/gsl.sp.1997.119.01.01
UR  - https://pubs.usgs.gov/publication/70246337
ID  - 70246337
ER  -