Erdâelyi, Mihâaly. <br/><br/>
Surface and subsurface mapping in hydrogeology/ 
M. Erdâelyi, J. Gâalfi. 
 - Chichester ;  New York :  Wiley,  c1988. 
 - 383 p. :  ill. ;  25 cm. 
<br/><br/> "A Wiley-Interscience publication." 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0471909238 9630546582 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrogeology--Maps.<br/>Cartography.
<br/><br/><label>LC Class. No.: </label>GB1001.72.M32  / E73 1988