Reference:Reference-000261
From CSDMS
{{CSDMS publications |Publication-citation=McDonald, M.G., and Harbaugh, A.W., 1988. MODFLOW: A modular three-dimensional finite-difference ground-water flow model. Techniques of Water-Resources Investigations, Book 6. U.S. Geological Survey. |Publication-URL=http://pubs.usgs.gov/twri/twri6a1/pdf/TWRI_6-A1.pdf |Publication-ClusterID=27 Template:Publications about a single model