༄༅།། བོད་ དུ་ མི་ བརྒྱ་ ཡི་ ནང་ ཁ་ པར་ སྤྱོད་ མཁན་ 97ཡོད་ པ། 2016-01-13
11 gold mines began production in Burkina Faso between 2007 and 2018
Extract concentration, Environmental science definition, Circular motion