This textbook was first published by the British Library (London) in 1985 as the official introductory-level description of its own subject indexing system. It sold quickly to an international market. Due to demand it has now been reprinted by Scarecrow, with minor revisions, in agreement with the British Library.
Mary Dykstra is Professor and Director, School of Library and Information Studies, Dalhousie University, Halifax, Nova Scotia. She has studied PRECIS at the British Library and conducts training courses and workshops on the system. At the National Film Board in Montreal she developed Canada's national audiovisual information system, FORMAT, which uses PRECIS for subject access in English and French.