TY  - RPRT
TI  - Mineralogy and composition of concentric layers within a manganese nodule from the North Pacific Ocean
AU  - D.Z. Piper
AU  - M.E. Williamson
PY  - 1981
DO  - 10.1016/0025-3227(81)90143-2
UR  - https://pubs.usgs.gov/publication/70012156
ID  - 70012156
ER  -