FAQs about collecting books

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How does the Library let me know that I can collect a book I requested or reserved?
How long does it take until I can collect the book I requested from the Main Library?
How long does the Main Library keep books I requested/reserved ready to collect?
I cannot collect the book prepared for collection in due time. What can I do?
Can somebody else collect the books on my behalf?
What are the stacks and where are they?
What does “open stacks” mean and where is the open-shelf area?