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Artandi, S.: Document description and representation (1970)
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- Imprint
- Chicago : Encyclopædia Britannica, Benton
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Vickery, B.C.: Document description and representation (1971)
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- Imprint
- Chicago : Encyclopædia Britannica, Benton
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Kay, M.; Sparck Jones, K.: Automated language processing (1971)
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- Imprint
- Chicago : Encyclopædia Britannica, Benton