Shows how simple probability theory can serve to remove the bias from a sample so that estimates of total yearly circulation and circulation distribution can be calculated from circulation desk data. (Author/PF)

Estimates are given for the extent of the overlap of the monograph holdings of the Los Angeles and Berkeley campuses with the holdings of other southern and northern campuses. Estimates of the historic usage rates of the overlapped portions of the collections are also given. (Author/PF)

Based on a doctoral dissertation, this paper describes a study of why displays of books increase use. Two hypotheses were tested using standard pretest-posttest experimental designs at two small Illinois public libraries. Increased accessibility and visibility were found to be causes, while narrowing the browser's choice was not. (Author/EM)

Updates a storage cost model for academic library collections by examining how changes in construction costs and circulation costs affect the choices of an alternative book storage strategy. Results show that the most economical alternative for a large range of construction and circulation cost alternatives is to convert existing ground space to…