TY  - RPRT
TI  - Preliminary study of sources and processes of enrichment of manganese in water from University of Rhode Island supply wells
AU  - William Dudley Silvey
AU  - Herbert E. Johnston
PY  - 1977
DO  - 10.3133/ofr77561
UR  - https://pubs.usgs.gov/publication/ofr77561
ID  - ofr77561
ER  -