Spencer Johnson
Patrick Spencer Johnson (November 24, 1938 – July 3, 2017) was an American physician and author, known for the ValueTales series of children's books, and for his 1998 motivational book Who Moved My Cheese?.
| Links | https://en.wikipedia.org/wiki/Spencer_Johnson_(writer) |
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 | من الذي حرك قطعة الجبن الخاصة بي ؟ | Hardback |
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