The default search is "free-text" and "All Sources". Below is a search example:
1. To get details for a particular source (such as period and source coverage), first find the source, then click on the i icon next to it.
2. To browse articles in a particular source, click on the purple triangle to add its code to the Free Text Search box.
After the click, the Free Text Search box will look like the following. Click Search to browse articles in the selected source.
3. To remove a selected item in any fields, click on the white triangle next to it, then click Remove.