title: Do minor currency units have a ISO standard?
body: <p><a href="http://www.xe.com/iso4217.php" rel="noreferrer">ISO 4217</a> defines 3-letter currency symbols:</p>
  
  <ul>
  <li>EUR</li>
  <li>USD</li>
  <li>LKR</li>
  <li>GBP</li>
  </ul>
  
  <p>Do currencies' <strong>minor units</strong> (cent, pence) have a ISO or similar standard, too, that defines codes for those sub-units like</p>
  
  <ul>
  <li>ct</li>
  <li>p</li>
  </ul>
  
  <p>?</p>