A person who studies, compiles, or describes books and their characteristics, including authorship, editions, publication details, and historical significance.
From Greek 'biblion' (book) plus 'graphos' (writer) through French 'bibliographe.' The profession emerged formally in the 16th century as printing made book study systematic and valuable.
Bibliographers are like literary archaeologists—they've figured out that Shakespeare's First Folio had typos that reveal when pages were printed, or that certain 'lost' books actually exist in one secret archive!
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