Hendriksen, Oskar <br/><br/>
Geographic information systems for utility  mapping 
<label>/ by </label> Hendriksen, Oskar 
<label>;</label> Jayatilaka, Sarath 
 - Colombo  National Water Supply and drainage Board  2000 
 - xiv, 112p.  col. ill  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems (GIS)
<br/><br/><label>Dewey Class. No.: </label>363.60223  / HEN