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Mark Ritts
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Article
The New York Times (US)
"Mark Ritts, 63, an Actor Best Known as a Lab Rat"
December 12, 2009 · Vol. 159, Iss. 54,887, pg. A17 · by: Douglas Martin
The Los Angeles Times (US)
"Mark Ritts Dies at 63; Played Lester the Lab Rat on 'Beakman's World'"
December 10, 2009 · by: Dennis McLellan
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