Recoperation de l'or par sluicing. 

 - Bruxelles :    Institut Royal Colonial Belge,    1952- 
 - v. :    ill. ;    25 cm. 
 - v. 7, no. 1 (1952)- 
<br/><br/>  Latest issue consulted Vol. 7, no. (1952) 
<br/><br/><label>Dewey Class. No.: </label>S PER 606.1493 A 3