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  Show/ng 
  fhe 
  Areal 
  Extent 
  of 
  6lacial 
  Lal<es 
  West 
  Dan 
  by 
  and 
  

   3nokfon 
  and 
  the 
  /nap 
  tent 
  Sta^e 
  ofG/acial 
  la/^e 
  Wdtkins. 
  

  

  By 
  Thomas 
  L. 
  Watson. 
  

  

  