Persons who are not practicing attorneys may use a county law library only with court approval. No books shall be removed from a library unless signed for in the office of the clerk or other custodian. All books must be returned to the library within 1 week from the date taken and returned to their proper places by library users. The bar association of each county shall select one or more of its members to advise and consult with the court on matters pertaining to library maintenance and regulation for that county. Additional library rules may be ordered by the court and conspicuously posted in the office of the clerk and library.