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This exhibition was held at Novotel, London from 22–24 May 1990 and presented a good cross‐section of recent developments as well as now‐standard products. The newer developments were in those systems which use the digital content of a CD‐ROM disk to combine text with audio and visual presentations. The backbone of the show, however, demonstrated the greatly increased and increasing range of databanks and reference material being published in this format. The expansion of the range is reflected in a decision by Microinfo to produce its CD‐ROM catalogue in glossy form and to issue it free on a two‐month schedule. Currently it lists 150 titles from 40 CD‐ROM publishers. Contact Roy Selwyn at Microinfo Ltd, PO Box 3, Omega Park, Alton, Hampshire, GU34 2PG (0420 86848). The same supplier gave advance information about a World Research Database disk, due late 1990, which will contain fully‐searchable versions of Longman's database of world class Research Centres combined with their International Who's Who of leading scientists and technologists.