Ground-water models.  vol.1 :  concepts, problems, and methods of analysis with examples of their application / 
prepared for the International Hydrological Programme, Working Group 8.1, J. D. Bredehoeft ....[et al.] 
 - Paris :  Unesco,  1982 
 - 235 p. 
 - Studies and reports in hydrology ;   34 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water, Underground x Mathematical models