Collins electronic english dictionary & thesaurus : user's guide
HarperCollins, 1995
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Collins college thesaurus
HarperCollins, 1995
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Collins paperback thesaurus
HarperCollins Publishers, 1995
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Collins English spelling dictionary
HarperCollins Publishers, 1993
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Collins COBUILD English dictionary
editor in chief, John Sinclair
HarperCollins Publishers, 1995
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