Usill, George William. <br/><br/>
Practical surveying :  a textbook for students preparing for examinations or for survey work at home and overseas. 

 - 15th ed. / rev. by K.M. Hart.  15th ed. / rev. by K.M. Hart. 
 - London :  Technical Press,  [1960] 
<br/><br/>Bibliography: p. 468. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Surveying.