The developing science and art of minerals surveying :  proceedings VIth international congress, international society for mine surveying, Harrogate, 9-13 September 1985 

 - Rotterdam :  A. A. Balkema,  1985 
 - 2v. ;  24 cm. 
<br/><br/><label>ISBN: </label>9061916151  set 
<br/><br/><label>LCCN: </label>86-151772 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mine surveying--Congresses<br/>Mine and mineral resources--Congresses<br/>Ground control (Mining)--Congresses