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1by Chandran, D“...Studies of popsi (Postulate-based permuted subject indexing)...”
Published 2007
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2by Biswas, Subal C.Subjects: “... : Classed vocabularies : Information languages : String indexing languages : POPSI : Controlled vocabularies...”
Published 1988
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3by Frederika Welle Donker“... in the European Union. Both the Vickery Report and the second study, the so-called POPSIS Study, showed...”
Published 2016-11-01
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