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Conyers, A.D. (1989). The use of external information by managers in larger industrial companies with special reference to the role of electronic external information services. (Unpublished Doctoral thesis, City University London)
Hancock-Beaulieu, M. (1989). Subject searching behaviour at the library catalogue and at the shelves: evaluating the impact of an online public access catalogue. (Unpublished Doctoral thesis, City University London)