Get something to read, hopefully for a thin bookend (4,7,4)

I believe the answer is:

find another book

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'get something to' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'hopefully for a thin bookend' is the wordplay.
'for a thin bookend' anagrams to 'FIND ANOTHER BOOK'.
However, I'm unsure how this is indicated.

'read' is the link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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