Agor, R.  <br/><br/>
A textbook of surveying and levelling / 

 - New Delhi,  Khanna Publishers,  c2013. 
 - 126 p. ;  ill. ;  27 cm.  
<br/><br/><label>ISBN: </label>9788174092359 
<br/><br/><label>Dewey Class. No.: </label>526.982