TY  - RPRT
TI  - Newly recognized en echelon fall lines in the Piedmont and Blue Ridge provinces of North Carolina and Virginia; with a discussion of their possible ages and origins
AU  - R. E. Weems
PY  - 1998
DO  - 10.3133/ofr98374
UR  - https://pubs.usgs.gov/publication/ofr98374
ID  - ofr98374
ER  -