﻿Plate, 
  103. 
  — 
  Aymara 
  preparing 
  quinoa. 
  Top: 
  Threshing 
  at 
  Chucuito, 
  Peru. 
  

   (Courtesy 
  Harry 
  Tschopik, 
  Jr.) 
  Bottom: 
  Making 
  flour, 
  Bolivian 
  altiplano. 
  

   (Courtesv 
  James 
  Sawders.) 
  

  

  