This study estimates the proportion of academic and public library acquisitions in the United Kingdom for which a UK MARC record is available at the time of cataloging. A beta-binomial model is used to attribute standard errors to each estimate and to compare differences between the two types of libraries. (Author/LRW)

Two models of library circulation, the Markov model and the mixed Poisson Model, are applied to circulation statistics from the University of Saskatchewan. Goodness-of-fit tests indicate that neither model fits the data; in both cases, the set of noncirculating items is larger than that predicted by the model. (Author/LRW)

Discussion of operational effectiveness in libraries focuses on a modeling approach that was used to compare the effectiveness of a local interlibrary loan system with using a national system, the British Library Document Supply Centre (BLDSC). Cost figures and surveys of five academic libraries are described. (six references) (LRW)