Qualitat de les dades i verificacions imparcials <a href="http://www.vector1media.com/spatialsustain/is-it-time-for-an-impartial-auditing-board-on-spatial-data-accuracy.html">http://www.vector1media.com/spatialsustain/is-it-time-for-an-impartial-auditing-board-on-spatial-data-accuracy.html </a><br>
<br>Raf<br>