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Bob Newhart - Wikipedia
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Every Bob Newhart Appearance on 'The Big Bang Theory,' Ranked | Decider
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Professor Proton | The Big Bang Theory Wiki | Fandom
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Bob Newhart - IMDb
Bob Newhart - IMDb
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Bob Newhart - Wikipedia
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The Big Bang Theory Cast Members' Dating Lives Off Screen
Bob Newhart | The Big Bang Theory Wiki | Fandom
Bob Newhart, aka 'Professor Proton,' bids farewell to 'Big Bang Theory'
Big Bang Theory': Bob Newhart Returning in Final Season 12 as Proton | TVLine
