Collins COBUILD English dictionary
editor in chief, John Sinclair
HarperCollins Publishers, 1995
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Collins English spelling dictionary
HarperCollins Publishers, 1993
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Collins today's English dictionary
HarperCollin Publishers, 1995
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Kamm, Antony
Collins biographical dictionary of English literature
Harper Collins Pub., 1993
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Collins, Carol
Collins electronic english dictionary & thesaurus
HarperCollins, 1995
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