Each of the services below act as indexes to the journal literature in the biological sciences, each has its own unique niche and purpose. Place the mouse over each link for a full description of each database.
Each of these databases has a unique list of journals that they commit to indexing. Some databases have broader subject and date coverage than others. Learning what each of these can and cannot do will be helpful when you need to quickly and efficiently find references.
There are more than 700 databases listed on the Princeton University Library's Articles and Databases page that cover a wide varity of subject areas. All databases are browsable by title and subject, here are examples of subject specific lists:Politics, Environmnent.