TY  - RPRT
TI  - Guidelines for finding concretionary Mn-Fe oxides in streams
AU  - G.A. Nowlan
PY  - 1982
DO  - 10.1016/0375-6742(82)90021-8
UR  - https://pubs.usgs.gov/publication/70011909
ID  - 70011909
ER  -