title: Reading csv file, having numbers and strings in one column
body: <p>I am importing a 3 column CSV file. The final column is a series of entries which are either an integer, or a string in quotation marks.</p>
  
  <p>Here are a series of example entries:</p>
  
  <pre><code>1,4,"m"
  1,5,20
  1,6,"Canada"
  1,7,4
  1,8,5
  </code></pre>
  
  <p>When I import this using read.csv, these are all just turned in to factors.</p>
  
  <p>How can I set it up such that these are read as integers and strings?</p>
  
  <p>Thank you!</p>