Modern Marvels
      Leather (13x9)
      
      Yayınlanma tarihi: Mar 08, 2006
      Made by the tanning of animal hides, leather has proven to be a versatile and important material.  Without it, the Pilgrims may not have survived the winters in Plymouth, and the Romans may not have been able to march to the Tigris.
     
    
      
        
        
          
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