TY - RPRT TI - Model modifications for simulation of flow through stratified rocks in eastern Ohio AU - J. O. Helgesen AU - A. C. Razem AU - S. P. Larson PY - 1982 DO - 10.3133/wri824019 UR - https://pubs.usgs.gov/publication/wri824019 ID - wri824019 ER -