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Smith, N.: Z39.50 and the OPAC Network in Europe (ONE) Project (1996)
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Hakala, J.: Z39.50-1995: information retrieval protocol : an introduction to the standard and it's usage (1996)
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Ashton, J.: Development of the British Library's OPAC 97 : the value of a user-centred approach (1998)
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Smith, N.A.: ONE, OPAC network in Europe : taking a further step towards a Europe-wide information network (1995)
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