Library weeds.

Weeding is essential to the efficient operation of medical libraries and should be conducted in spite of certain barriers that exist. The mechanics of weeding are simple, and the criteria are widely known. A questionnaire survey of ninety-four medical school libraries reveals that weeding is most often shared by professional staff members, that weeding is done primarily when space is needed, and that librarians when weeding do not as a rule seek the advice or assistance of users or the Library Committee.