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An expression for the efficiency of a subject catalogue or index is derived from the probability of success when using the catalogue, and the cost of making and using the catalogue, compared with the cost of finding material in the library stock when no subject catalogue is available.

Provides an examination of the marketing mix budgeting procedure. Gives a model information framework which acts as a basis for data search in the corporate marketing activity, and investigates the effect of data imperfection.

The search for an easily installed, practicable and inexpensive information retrieval system continues unabated. This is reflected in the Aslib Library almost daily by requests for advice on the feasibility of installing this or that system, or for information on what systems are available in Great Britain. Study of the following bibliography, which covers only a narrow selection of information retrieval systems, will reveal that much original thought has been producing concrete results in this country. In fact, one of the earliest references is to a paper given at the twenty‐second Aslib Conference in 1947 by W. E. Batten, in which he describes his development of an ‘aspect’ card system—more often referred to today as ‘Peek‐a‐boo’ or ‘feature’ cards. Mr C. W. Cleverdon's Cranfield project is also adding considerable knowledge on the use of various indexing methods, including Uniterm.

Since its formation in 1950 the Aslib Aeronautical Group has been concerned with various aspects of classification, particularly with regard to the retrieval of information from research reports. During the last year the Documentation Committee of the Advisory Group for Aeronautical Research and Development of N.A.T.O. has been working along the same lines. While the application has been restricted to the field of aeronautics, it is felt that the conclusions are valid for other branches of science and engineering.

Presents the results of an interview survey carried out in an out‐of‐town store, compares these with the impact of the store as predicted by the Lakschmanan‐Harsen real potential model. Suggests that the model is an effective way of assessing the impact of out‐of‐town stores.

Thirty years or more ago, a favoured question in examination papers for librarians was some variation on the theme ‘Compare the merits of a classified catalogue and an alphabetical subject catalogue’. This was a subject which it was possible to write on or to discuss at great length, advancing a number of theoretical arguments or opinions expressed by pundits, without ever stating a single demonstrable fact. When, in the early 1950's, various people, such as Taube and Mooers, proposed new techniques for indexing, the reaction from the traditionally‐minded was such that it appeared there was to be a repetition of all the old arguments. In an editorial in American Documentation in 1955, Perry expressed a viewpoint, shared by many others, when he wrote:

The purpose of this research was to investigate the attendance range of spectators at an English Football Association Premier League club. The numbers of spectators in both percentage and absolute terms were calculated and allocated to three segments (heavy, medium, light attendance). The findings were compared to an earlier reported study in the United States and marketing recommendations based on related studies and industry expertise were proposed for those involved in live spectator sports.