bibliographer (n.)

1670s, "the writing of books," from Greek bibliographia "the writing of books," from biblion "book" (see biblio-) + graphos "(something) drawn or written" (see -graphy).

The meaning "the study of books, authors, publications, etc.," is from 1803. The sense of "a list of books that form the literature of a subject" is attested by 1814. Related: Bibliographic.