What was the greeting before Hello?

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Tags

  1. #greeting
  2. #graham
  3. #proper
  4. #suggesting
  5. #given
  6. #years
  7. #thomas
  8. #hello
  9. #credit
  10. #inventor
  11. #answering
  12. #invented
  13. #telephone
  14. #edison
  15. #later
  16. #alexander
  17. #until
  18. #standard
  19. #competitor