TY  - RPRT
TI  - Preliminary estimate of the underflow across the South Dakota-Nebraska State line in the Niobrara River and Ponca Creek drainage basins
AU  - E.C. Reed
AU  - Charles Franklin Keech
PY  - 1957
DO  - 10.3133/ofr5794
UR  - https://pubs.usgs.gov/publication/ofr5794
ID  - ofr5794
ER  -