Skip to main content
The Jebel al-Ma'taradh and its surroundings contain exceptional deposits of lithic raw materials, including flint and chert, but especially chalcedony, agate, carnelian, and chrysoprase. These deposits were intensively exploited during... more
    • by  and +1
    •   157  
      Mining EngineeringHuman GeographyArchaeologyExperimental Archaeology
descripcion de las plantas medicinales en el Paraguay
    • by 
    •   3  
      MineralogyFisiología VegetalOrigen De Los Minerales