Search in the catalog can be done in three different ways :

• browsing Topics and Sub-topics, using the entries under "Topics"
• doing a "Geographical search", that gives a list of projects corresponding to the entered sites. In this case, click first on "Search by study sites", then move the cursor to the center of the zone where you want to search for projects, or give the information (coordinates, distance) in the fileds below the map.
• doing a "Textual search".