TY  - RPRT
TI  - Graphs showing percentage composition of sediments from water-bearing formations in southern Maryland, and maps showing the altitude of the base of sediments of Miocene age, and hardness of water sediments of Cretaceous age, in the same area
AU  - E. G. Otton
PY  - 1954
DO  - 10.3133/ofr54224
UR  - https://pubs.usgs.gov/publication/ofr54224
ID  - ofr54224
ER  -