Appel, Charles A. <br/><br/>
Summary of selected computer programs produced by the U.S. Geological Survey for simulation of ground-water flow and quality, 1994 / 
by Charles A. Appel and Thomas E. Reilly. 
 - Washington, D.C. :  United States Government Printing Office,  1994. 
 - iv, 98 p. ;  28 cm. 
 - U.S. Geological Survey circular ;  1104 .
<br/><br/>Includes bibliographical references (p. 85-93). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Groundwater flow--Computer simulation.<br/>Geomorphology
<br/><br/><label>Dewey Class. No.: </label>551.490113