Portail Cantook Édition Current: Frequently asked questions Frequently asked questions Unable to access the digital warehouse What to do if you enter the wrong ISBN? What to do in case of a problem? Is it possible to extract the back cover of my PDF file? Do I need a different ISBN for each of my formats? Why can't I see all options? What can I do if my publications do not appear in the catalogue of some online bookstores? ×