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Lookup NU author(s): Emeritus Professor Francis Jones
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Author(s): Jones FR
Publication type: Article
Publication status: Published
Journal: System
Year: 1991
Volume: 19
Issue: 1-2
Pages: 1-13
ISSN (print): 0346-251X
ISSN (electronic): 1879-3282
Publisher: Pergamon
URL: http://dx.doi.org/10.1016/0346-251X(91)90003-8
DOI: 10.1016/0346-251X(91)90003-8
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