A0

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A0
  • ISO 216 A0, an international standard paper size (841 × 1189 mm), which results in an area of 1 .
  • A0 is the lowest note on a standard piano.
  • L'Avion, a French airline.
A-0
a0
  • a0 is the accepted mathematical symbol for the Bohr Radius.
  • A0 Highway, a highway which orbits Zimbabwe

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