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This paper outlines some of the practical problems facing those involved with image collections, and the financial implications of the retrieval complexities allied to the scale of such collections, when computer-aided systems are considered. Projects carried out since the early 1970s are described, and existing classification systems such as ‘Iconclass’ are assessed, with emphasis on the need for compatibility. A realistic approach to making basic information readily accessible in a relatively cheap system which may later be expanded given the non-economically viable nature of this field, is recommended.

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