Answer:

readers

Answer	Crossword Clue
READERS	Most library users
READERS	Library clientele
READERS	Library frequenters

READERS	Certain glasses
READERS	They work on the books
READERS	Magazine buyers
READERS	Basic schoolbooks
READERS	Paper buyers
READERS	Some school books
READERS	Subscription takers
READERS	English books

READERS	Book lovers
READERS	Primers
READERS	Book club members
READERS	McGuffey's line.
READERS	McGuffey's production.
READERS	McGuffey classics.
READERS	Schoolbooks.
READERS	Publishers' aides.

READERS	Manuscript advisers.
READERS	Employees of utility companies
READERS	Personnel in publishing
READERS	Schoolbooks
READERS	Primers, e.g.
READERS	Circulation figures
READERS	Circulation, in a way
READERS	Newspaper customers

READERS	Publishing employees
READERS	Author's desire
READERS	Blogger's audience
READERS	Circulation concern
READERS	Folks going through leaves
READERS	Kindles, e.g.
READERS	People who correct printers' proofs
READERS	Kindle buyers

READERS	Publishing house employees
READERS	Circulation, essentially