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Text File  |  1991-02-25  |  405 b   |  15 lines
  1. Economic history and conditions; transportation and communication
  2.  
  3. HD               Economic history and conditions
  4.                     Labor
  5.     8039.C6522         Computer industry employees
  6.  
  7.                     Special industries
  8.     9696.C6-64         Computer industry
  9.  
  10. HE               Transportation and communication
  11.     6239.E54        Electronic mail systems
  12.  
  13.  
  14. Class. Menu <CALL>
  15.