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Dempsey, L.; Russell, R.; Kirriemur, J.W.: Towards distributed library systems : Z39.50 in a European context (1996)
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Needleman, M.H.: ¬The Z39.50 protocol : an implementor's perspective (1992)
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Baldacci, M.B.: ¬L'¬accesso in rete agli OPAC e il progetto ARCA (1996)
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Moen, W.: Information retrieval protocols : Z39.50 and Search & Retrieve via URL (2009)
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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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