Threlfall, Harold Spencer. <br/><br/>
A text-book on surveying and levelling / 
H. Threlfall 
 - Third edition  revised and enlarged 
 - xix, 689 pages :  illustrations, folded plates, folded maps ;  20 cm. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Surveying.<br/>Leveling.
<br/><br/><label>LC Class. No.: </label>TA545  / THR