Describes the use of the "Science Citation Index" in deciding whether to keep older basic science books that have failed to meet other criteria for collection retention. It is concluded that manual searching of the indexes proved feasible and reliable, while the lack of book titles on the online version reduced reliability of weeding…

The purpose of this study was to examine the science and technology books in 18 elementary school libraries in 18 Maryland school districts and: determine the age of the books; identify what percent of the books matched a professional selection source; determine the number of books per student; and estimate costs in upgrading the collections. (AEF)