Status of ground-water modeling in the U.S. Geological Survey /
by Charles A. Appel and John D. Bredehoeft.

APA Citation

Appel, C. A., Bredehoeft, J. D. (John D.)., Geological Survey (U.S.). (1976). Status of ground-water modeling in the U.S. Geological Survey. [Arlington, Va.]: U.S. Dept. of the Interior, Geological Survey.

MLA Citation

Appel, Charles A, J. D. (John D.) Bredehoeft, and Geological Survey (U.S.). Status of Ground-water Modeling In the U.S. Geological Survey. [Arlington, Va.]: U.S. Dept. of the Interior, Geological Survey, 1976.