dt><dd><p>casein content</p>
</dd>
<dt><code>X5</code></dt><dd><p>cheese dry substance measured in the factory</p>
</dd>
<dt><code>X6</code></dt><dd><p>cheese dry substance measured in the laboratory</p>
</dd>
<dt><code>X7</code></dt><dd><p>milk dry substance</p>
</dd>
<dt><code>X8</code></dt><dd><p>cheese product</p>
</dd>
</dl>



<h3>Source</h3>

<p>Daudin, J.J. Duby, C. and Trecourt, P. (1988)
Stability of Principal Component Analysis Studied by the Bootstrap Method;
<em>Statistics</em> <b>19</b>, 241&n