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  1. The @ Symbol Meaning & History - Webopedia

  2. At sign - Wikipedia

  3. What is an At Sign (@)? - Definition from WhatIs.com - TechTarget

  4. At sign | Meaning, Symbol, History, Uses, & Facts | Britannica

  5. What Is An At Sign ( @ ) & How Do You To Use It? - Thesaurus.com

  6. When to Use the At Symbol (@) in Writing - Proofed

  7. The mystery over the @ sign - BBC News

  8. The Accidental History of the @ Symbol | Smithsonian

  9. At Sign - Rules & Examples - Really Learn English

  10. History of the 'at' symbol @ commercial at