FAQs about loan periods, renewing loans or returning books

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How long can I keep the books I borrowed?
How do I find out when the books I borrowed are due, and how can I renew loans?
Why can I not renew a loan?
Why can I sometimes renew the loan of a book that is already overdue?
What happens if I fail to return a book on time?
How much are the reminder fees?
Why do I only have to pay the overdue charges for a certain book?
Can I return the borrowed books at any library?
My special library is closed. How can I return the books I borrowed there?
The lending service area/textbook collection/inter-university loan counter at the Main Library is closed. How can I return the books I borrowed there?
Why do I have to return a book after one year even though nobody has reserved it?
I just paid my fees at the automatic pay station at the Main Library. The receipt says “Verbleibende Gebühren 0,00 Euro” (outstanding fees EUR 0.00). Why does my account still show outstanding fees?
I returned a book. However, it is still listed under my loans. What do I do?
What do I have to do if I lose a book?