Crossword Genius

Books on wheels? (6,7)

Ross

I believe the answer is:

mobile library

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">books on wheels?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>

(Other definitions for mobile library that I've seen before include "Books on the move" , "Books on wheels?" .)

I've seen this clue in The Guardian.
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