EBSCO Discovery Service provides a publications tool that enables CTU users to easily determine the titles they can access electronically. Find it at the top of the EBSCO Discovery Service home page (login required).
You may search by title or by ISSN for the journal you're looking for. Click the link that says Full Text Access in the results list to see the possible sources for your title (note the date ranges for each -- they're likely to be different!).
Click any link to go to that specific source for the title you want. You can then browse the available volumes and issues, as in this example:
If you find that CTU doesn't provide electronic access to the volume or issue you need, you can use the Interlibrary Loan process to ask the staff to try to obtain an article for you. Also remember that the Library receives some titles in print only, and that older issues may only be available that way.