Agor, R. <br/><br/>
A textbook of  surveying and levelling / 
R. Agora. 
 - 3rd. ed. 
 - Delhi:  Khanna publishers,  c1984. 
 - 942p. :  illus. ;  21 cm. 
<br/><br/> Includes index. 
<br/><br/>
<br/><br/><label>ISBN: </label>080038182 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Surveying<br/>Levelling 
<br/><br/><label>Dewey Class. No.: </label>624.1517/AGT