| http://id.insee.fr/qualite/attribut/2032/I.18.12/text |
http://www.w3.org/1999/02/22-rdf-syntax-ns#value |
<p>The survey is conducted every two months but not all questions are asked every month.<br />
In practice, two 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 March, May, September and November.</p> |
Datalift
