Usill, George William, <br/><br/>
Practical surveying :  a text-book for students preparing for examinations or for survey work in the colonies / 
by George William Usill. 
 - 13th ed., revised. 
 - London :  Crosby Lockwood and Son,  1926. 
 - xx, 358 pages :  c 20 cm.  illustration ; 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Surveying