Trewartha, Glenn Thomas  1896- <br/><br/>
Geographic information systems in water resources engineering 
Lynn E. Johnson. 
 - 4th.ed. 
 - New York,  McGraw-Hill  [1968] 
 - 408 p.  illus., maps.  24 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>68016492 (LC No) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Climatology.<br/>Weather