Duggal, S K <br/><br/>
Surveing - vol. 2 

 - 4 
 - New Delhi  McGraw Hill  2013 
 - xiii, 514p.  
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9781259029837 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Surveying and Levelling<br/>Triangulation<br/>Trigonometric levelling