TY  - RPRT
TI  - Bog iron formation in the Nassawango Creek watershed, Maryland, USA
AU  - O.P. Bricker
AU  - Wayne L. Newell
AU  - N.S. Simon
PY  - 2004
UR  - https://pubs.usgs.gov/publication/70026452
ID  - 70026452
ER  -