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Dykstra, M.: Subject indexing and retrieval: what more can technology do? (1987) 7.64

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Theme: Preserved Context Index System (PRECIS)

Dykstra, M.: PRECIS in the online catalog (1989) 7.64

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Theme: Preserved Context Index System (PRECIS)

Dykstra, M.: ¬The lion that squeaked (1978) 7.64

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Theme: Preserved Context Index System (PRECIS)

Dykstra, M.: PRECIS: a primer (1985) 7.64

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Theme: Preserved Context Index System (PRECIS)

Dykstra, M.: PRECIS in the online catalog (1989) 7.64

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Theme: Preserved Context Index System (PRECIS)

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