TY  - RPRT
TI  - Microbanded manganese formations; protoliths in the Franciscan Complex, California
AU  - J. Stephen Huebner
AU  - Marta J. Flohr
PY  - 1990
DO  - 10.3133/pp1502
UR  - https://pubs.usgs.gov/publication/pp1502
ID  - pp1502
ER  -