Very helpful in doing many papers! A service of the National Library of Medicine, this resource offers an index to more than 15 million citations from Medline for biomedical articles, including nursing, dating back to the 1950s. It also links to the full text of articles and nongovernmental Web resources. Choose “Books” from the search box menu and search the NCBI Bookshelf—a free, full-text collection of biomedical books. Access: