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3/5
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author
Charles Hurlburt
Charles Hurlburt is an eighty-year-old former software engineer. He lives in Westborough MA. He plays tennis a couple of times a week and is an avid puzzle solver. His credentials ...voir plusCharles Hurlburt is an eighty-year-old former software engineer. He lives in Westborough MA. He plays tennis a couple of times a week and is an avid puzzle solver. His credentials and qualifications for writing on this subject are defined in the Introduction.voir moins