http://id.insee.fr/qualite/attribut/1948/I.18.12/text |
http://www.w3.org/1999/02/22-rdf-syntax-ns#value |
<p>The survey is conducted every month but not all questions are asked every month. Some questions are only asked to enterprises in road haulage of goods.</p>
<p>In practice, three models of questionnaires were created to take into account these specificities:<br />
- the first questionnaire corresponds to the months of January and July;<br />
- the second one is sent in February, March, April, May, June, August, Septembre, November and December;<br />
- the last one is sent in April and October.</p> |