Weeding (otherwise known as deselection) is the part of the collection development cycle where items are removed for the benefit of the overall collection, keeping it relevant, accurate, and appealing.
Weeding allows library staff to remove items that are damaged, worn, outdated, or no longer relevant and makes room for new materials - essential in a small library with limited shelf space.
CREW: A Weeding Manual for Modern Libraries: A classic tool from the Texas State Library and Archives Commission.
The Art of Weeding: Library Journal, 2015
Weeding Library Collections: A selected, annotated bibliography from the American Library Association
The Weeding Handbook by