The method called CREW (Continuous Review, Evaluation, and Weeding) integrates material selection and acquisition, cataloging and processing, and circulation and reference into one ongoing routine that assures that all the necessary indirect services are accomplished in an effective way. This revision of the original guide, published in 1976, responds to a multitude of changes that have taken place in the library field over the last two decades. Updates in the areas of multimedia and computer technology have been added, and options for the disposal of weeded materials have been augmented. This manual is designed for use primarily by community and branch librarians who are anxious to provide their patrons with efficient, effective service in a pleasant, attractive library setting. It attempts to describe in a step-by-step fashion a method of carrying out the five processes of "reverse selection:" inventory, collection evaluation, collection maintenance, weeding, and discarding. The text is arranged into three sections: background and process, guidelines, and a summary. Appendices include a computer sampling form and sample disposition slips. An 80-item bibliography is also provided. (MAS)