Cognitive processes in spelling
Uta Frith edited
Academic Press, 1980
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Lewis, Norman
Dictionary of correct spelling : a handy reference guide
Harper & Row , 1962
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Dictionary of spelling : get results!
Geddes & Grosset, 2003
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Bolander, Donald O.
The new Webster's spelling dictionary
Lexicon Publication, 1993
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Fergus, Patricia M.
Spelling improvement : a program for self-instruction
McGraw-Hill, 1991
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