Table of
<ol>
<li>mean   $integral dfeature_id$ [ Features Political Africa Districts country_na ]  
</ol>
<a href="http://digilib.icpac.net/SOURCES/.Features/.Political/.Africa/.Districts/.country_na/feature_id+integral/%5Bfeature_id+%5Daverage/" >Additional Information</a><p><table border>
<tr><th>int_dfeature_id</th></tr>
<tr><th>ids</th></tr>
<tr><td>-2147483648</td></tr>
</table>