TY  - RPRT
TI  - Nomenclature of lower ordovician rocks of Washington County, Maryland
AU  - William Jasper Sando
PY  - 1956
DO  - 10.1130/0016-7606(1956)67[935:noloro]2.0.co;2
UR  - https://pubs.usgs.gov/publication/70216238
ID  - 70216238
ER  -