Quickly search for articles and books with the Leiden Search Assistant! The Leiden Search Assistant allows you to search the Leiden University Library Catalogue, Google Scholar, WorldCat, and Pubmed at any moment, without having to navigate to the respective websites first. Click on the Leiden Search Assistant, insert the term you want to look for, select your service, and proceed with your search! Are you reading an article and you find a particular word or term that you would like to investigate? Select it with your mouse, right click, and discover what the Leiden University Libraries have to offer.