Biblio Module, by default, puts the menu link in the navigation menu and is only visible to Administrators of the Drupal site. Depending on your theme and if you are not using the navigation menu it can cause your theme to look broken. You can place the biblio link in the primary & secondary links locations. Once you've fix the menu location your site will return to normal. To make menu changes go to Administer - Site Building - Menu.
Additional Permissions setup is require for others to view/edit etc. Follow the steps outlined below:
Step 1: Navigate to Administer - User and click on permissions.
Step 2: Find the biblio module section.
Step 3: Select all the check boxes on "access biblio content". This will allow other users to be able to view the biblio content, otherwise no one will be able to see the biblio content other than the site adminstrator's.