Biographies of obscure people. Student course outlines. Elementary and secondary textbooks. The criteria that follow represent recommendations only, because there is an element of the weeding process that will always remain largely subjective. Most of the criteria listed below have been published in the how-to literature of librarianship.
Some contradictions exist among the criteria.
There is, however, some rationale to much of what is proposed. In summary, while less than perfect, these criteria do represent a starting point for current weeding practice. Content Weeding Titles that contain dated information. Titles that reflect a poor writing style. Items that have been superseded by newer information, rendering them essentially incorrect.