The titles (in color) in the middle column are hot links and will:
Because of Purdue University Libraries' subscriptions you may read, print and download for future use all of these articles for your personal research. Do not give them to others.
When accessing from on and off campus you will be asked for your user ID and password; this is your Purdue University user ID, the one you use to access Purdue e-mail.
As for articles with no links provided, libraries don't have them in our collection. You will either request using ILL service or check with your instructor.