Walker, Colonel J. T. <br/><br/>
Account of the operations of the great trigonometrical survey of India. Vol. I 

 - Dehradoon  The office of the great trigonometrical survey   1870 
 - xxxv,104p.,48p.,26p.,28p.,32p.,30p.,32p.,48p.,33p., Appendix, 60p.,Plates 33, Map 
<br/><br/><label>Subjects--Personal Names: </label><br/>India
<br/><br/><label>Dewey Class. No.: </label>526.3 Wal/Acc