TY  - RPRT
TI  - Altitude of the top of the Sparta Sand and Memphis Sand in three areas of Arkansas
AU  - Aaron L. Pugh
AU  - Paul W. Westerfield
AU  - Gerard Gonthier
AU  - David T. Poynter
PY  - 1998
DO  - 10.3133/wri984002
UR  - https://pubs.usgs.gov/publication/wri984002
ID  - wri984002
ER  -