I wish to extend the loan period of a book

If you wish to extend the loan period of a book, log in to your user accont by clicking on "Login" in the blue box at the top left of the page. After logging in, you can look at your current loans via "My Profil" > "Loans". There you can extend the loan period, provided nobody else has reserved the book.

Should you have problems with your login, please consult Registration and User Account.