TY  - SER
AU  - Helmers, M.J.
AU  - Crumpton, W.G.
AU  - Lemke, D.W.
AU  - Singh, R.
TI  - Predicting Effects of Drainage Water Management in Iowa'S Subsurface Drained Landscapes
KW  - Controlled Drainage
KW  - Drainmod
KW  - Shallow Drainage
ER  -