985 resultados para Information services
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"Contract NSF-C149."
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Item 231-B-1
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"March 1980".
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Cover title.
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Cover title.
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Mode of access: Internet.
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Mode of access: Internet.
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Includes bibliographical references and index.