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classification_ss:"025.4'82"
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subject_ss:"PRECIS (Indexing system)"
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theme_ss:"Preserved Context Index System (PRECIS)"
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year_i:[1980 TO 1990}
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Dykstra, M.: PRECIS: a primer (1985)
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Austin, D.: PRECIS: a manual of concept analysis and subject indexing (1984)
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