TY  - RPRT
TI  - Shallow water table fluctuations in relation to soil penetration resistance
AU  - James B. Shanley
AU  - K. Niclas Hjerdt
AU  - Jeffrey J. McDonnell
AU  - Carol Kendall
PY  - 2003
UR  - https://pubs.usgs.gov/publication/70240592
ID  - 70240592
ER  -